Matlab plot units

Matlab plot units. Most common Matlab functions will work with physical units, including many types of plots (with added axis labels). stackedplot (tbl) plots the variables of a table or timetable in a stacked plot, up to a maximum of 25 variables. String = 'Time'; This was a weird one. If y s (t) denotes the system’s unit step response, we can see from figure 1 that y s (0+)=0 and y s (∞)=2. The axes properties documentation states this clearly: "Tick mark labels, specified as a cell array of strings. A complex number z is a number that can be written in the form. 43 μsec. My code is shown below; I have also included an image below. Second edit To answer your question about the intersection of a line and a circle, you have to start with the maths behind. To verify Nov 6, 2020 · Hi! I was given some data where Y axis is in uV and X axis in seconds. 3]. For example, set the color of the label to red. Create Geographic Scatter Plot. If you do not specify the axes, then yyaxis adds a second y -axis to the current axes. x = linspace(0,25); y = sin(x/2); yyaxis left. You also can create a duration array using the Nov 17, 2017 · Hey Guys, kind of new here so this is a noob question. EdgeLabel — Edge labels {} (default) | vector | cell array of character vectors | string array Edge labels, specified as the comma-separated pair consisting of 'EdgeLabel' and a numeric vector, cell array of character vectors, or string array. To plot a set of coordinates connected by line segments, specify X and Y as vectors of the same length. plot((1:10). Apr 28, 2012 · Now I want to plot a line (a unit vector) over the refernce systemfor example V= [0. After you import data into the MATLAB ® workspace, it is a good idea to plot the data so that you can explore its features. Edited: Star Strider on 22 Sep 2018. 3. This example shows how to plot data in polar coordinates. Plot a second ellipsoid with its center translated by (3, 0, 5) from the first ellipsoid. Feb 28, 2024 · Display units for any given variable can also be customized. The plot function makes these adjustments when working with graphs that have more than 100 nodes: Plot a unit circle using sine and cosine functions in MATLAB. I want to plot different unit spheres, meaning this equation has to be solved for the euclidean norm (n=2): Theme. Plot Data Against Left y -Axis. By default, the axes goes into the first tile. MATLAB fits the axes to this rectangle. To plot multiple data sets, specify multiple variables for thetavar, rhovar, or both. So I came up with this solution. Create a line plot of both sets of data and return the two chart lines in p. So I would like to make my plot in a "square" format. Oct 26, 2020 · The function that we were asked to plot is the following: 1 = x^ (2)/9 - y^ (2)/4. TimeInfo. I have a capacitance per unit length Vs meters plot. The yyaxis left command creates the axes and activates the left side. The reevaluation when zooming reveals more details at smaller scales. Specify the locations as a vector of increasing values. Use dot notation to query and set properties. Create a transfer function of the system and tune the controllers. 51 -0. MATLAB PROGRAMS. There is the xlabel and ylabel from the underlying axes, but that is not very useful. Add a second y -axis to the top axes by specifying ax1 as the first input to yyaxis. Plotting Data Introduction. If you change the units, then it is good practice to return it to the default value after completing your computation to prevent affecting other functions that assume Units is set to the default value. Data Distribution Plots. Specify dim as the size and location of the smallest rectangle that encloses the ellipse. Example: plot(G,'EdgeColor','r') creates a graph plot with red edges. Axes Properties. 5,0. To plot multiple sets of coordinates on the same set of axes, specify at least one of X or Y as a matrix Line Plots. length = 3 m "meter - a physical unit of length. Nov 3, 2023 · Answered: Divine on 3 Nov 2023. Then I tried scatter that was very faster, but finally I used plot with 'o' parameter and MarkerSize set, that is absolutely the fastest solution. 5, 1. Jul 24, 2016 · 3 Answers. ^2. x [n] = ( (4/5)^n)u [n] -5 < n < 20. (shared X or Y) Specify the shared coordinates as a vector. Especially, i have observed that the plots have a "rectangle" format. *unitstep; All of these sequences are column vectors that contour (Z) creates a contour plot containing the isolines of matrix Z, where Z contains height values on the x - y plane. If the matrix is square, MATLAB ® plots the columns of the matrix against the vector. Most plotting functions accept datetime and duration Call the tiledlayout function to create a 2-by-2 tiled chart layout. The third and fourth elements of the Position vector (width and height) define a rectangle in which MATLAB draws the axes. *unitstep; quad = t. Units = 'days' ; Text Properties. 2. 1. xlabel('C [uF]', 'fontsize', 20,'Interpreter','latex') Feb 14, 2019 · Thanks again for your help. Theme. 001:2*pi; x=cos (t); y=sin (t); plot (x,y); axis square. Also, change the labels associated with each tick value along the x -axis. " Specify the acceleration due to gravity of 9. I want to change both units to mV and to hours. The number x is the real part of the complex number, which is denoted by x = R e Call the nexttile function to create the axes objects ax1 and ax2. Units = 'inches'; For figures created with the uifigure function, see UI Figure Properties instead. Jun 23, 2015 · The value 176 is decimal, so it cannot be used directly with either of those syntaxes, but if you convert it to the correct base it it will work exactly as documented (although watch out for the catch that Walter Roberson showed when using hexadecimal with a trailing 'C' character). [X,Y,Z] = ellipsoid(0,0,0,1. pz - pieze. Customize Polar Axes. For example, to create an array that has elapsed times of 1, 2, and 3 hours, use the hours function. The column and row indices of Z are the x and y coordinates in the plane, respectively. You can also use aliases u. Since MATLAB® is a programming language, an endless variety of different signals is possible. Apr 22, 2015 · The output of sprintf is a simple string, so MATLAB repeats this string for each tick mark. I got it figured out. x = linspace(-4,4); y = x. min and max of the axes. If you want to define each string uniquely, then supply them in a cell array. u = symunit; length = 3*u. 3. ax1 = axes(t); plot(ax1,x,y) Figure properties control the appearance and behavior of a particular instance of a figure. plotedit (state) changes the state of plot edit mode on the figure. x = linspace(-2*pi,2*pi); y1 = sin(x); y2 = cos(x); p = plot(x,y1,x,y2); Change the line width of the first line to 2. By changing property values, you can modify certain aspects of the axes. It is common to create graphs that have hundreds of thousands, or even millions, of nodes and/or edges. FontSize; plot3 (X,Y,Z) plots coordinates in 3-D space. I am wondering if there is a situation where your code is actually what is needed and my code is wrong. th = 0:pi/50:2*pi; xunit = r * cos (th) + x; yunit = r * sin (th) + y; h = plot (xunit, yunit); h = nyquistplot(___,plotoptions) plots the Nyquist plot with the options set specified in plotoptions. For instance, compare the closed-loop response of a system with a PI controller and a PID controller. Color = 'blue'; plot(x,y) Add another sine wave to the axes using hold on. ) Learn more about num2str I want to show the values with units on the plot For example, instead of 5. 22 0. plot(x,y2) hold off. checkUnits returns logical 0 (false), meaning the units are incompatible and not of the same physical dimensions. I got this vector V in this way: Using two 3D point (for example A and B) I get the vector v=A-B then the unit vector V= (A-B)/norm (A-B) So If I want to plot V, without A Sep 24, 2018 · Hi. Jul 30, 2020 · A vector in 3D should have three components so the size 101*3 is correct. Example shown below. 15]; Specify a length of 3 meters. 5,3); Create a surface plot of the ellipsoid. 5, 3). 5:2]*1e5, to [0:50:200]*1e3, ie, change the exponent of the scientific notation to 3 and rewrite the numbers to match it. Using the Property Editor GUI. You can create duration arrays that have specified time units using the years, days, hours, minutes, seconds, and milliseconds functions. 01:1)'; impulse = t==0; unitstep = t>=0; ramp = t. Geographic Plots. y2 = 2*sin(x); hold on. The values do not need to be evenly spaced. To add plots to an existing figure, use hold on. Discrete Data Plots. jpg" ); ax = axes; image(C) axis image. Currently, my graph is still incorrect. 2 . First, create a grid of x- and y- values that are equally spaced. 5,'text here'); s = t. Use the axis function to preserve the aspect ratio of the image. expand all in page. I have tried using xticks and yticks but the numbers on the x-axis are illegible and since I don't know an upper limit for the y-axis, I cannot define a vector for it. For this reason, plot treats large graphs slightly differently to maintain readability and performance. Use the quiver3 function to plot the vectors and the surf function to plot the surface. Include a variable value in the title text by using the num2str function to convert the value to text. The full assignment is asking us to generate a plot with our programming language of choice All units are measured from the lower-left corner of the container window. Units of Measurement. Axes text appearance and behavior. Add star markers to the second line. Also, you can plot expressions or functions over specific intervals. Oct 15, 2020 · sq_wave = 0. Create a line plot. At t = 2 there is a step change to the input, and the plot shows the system response to this new signal beginning from the state values at that time. Settings you specify in plotoptions overrides the preference settings in the MATLAB ® session in which you run nyquistplot. polarplot(tbl,thetavar,rhovar) plots the variables thetavar and rhovar from the table tbl. Line Plots. axis manual. Modify x-Axis Label After Creation. A. 2f ', X) display ('unit'); It will put The answer is bode (sys) creates a Bode plot of the frequency response of a dynamic system model sys. mH2O - meter of water (conventional) mHg - meter of mercury (conventional) mmHg - millimeter of mercury (conventional) mmH2O - millimeter of water (conventional) psf - pound force per square foot. Create latitude and longitude positions and define values at each point. If you simply want to use the axis labels (such as xlabel), multiply your 1E-6 data by 1E+6 and use xlabel Fig. , while the duration data type represents lengths of time, such as 12 hours and 30 minutes. To change the units, use the Units property. You can customize axes by changing the limits, controlling the locations of the tick marks, formatting the tick labels, or adding grid lines. 3] Change Axis Limits. x = [2 5 8 2 11 3 6]; ts1 = timeseries(x,1:7); ts1. Ryan. 43e-006 sec , I want it to be seen 5. . X = 25; fprintf ('The answer is %d ft/lb', X) If your answer will not be a nice round number like "25", you can replace the %d above with, say, %0. example. 25 . The example specifies the triangle as the marker, with size and color representing variations in the values. Is this possible? This is the line that I would like to have different: no u, but μ. This is still a plot function that does a lot under the hood, but it returns a handle, h, to the plot: sys = rss(3,2,2); h = pzplot(sys); sgrid; axis equal; We can via the options of a pzplot with getoptions: p = getoptions(h) To set the labels and units as you desire, you might try this, using setoptions: Create Ellipse Annotation. The function plots the variables in separate y -axes, stacked vertically. How can I change x-axis units to micrometers and y-axis units to pico Farads per meter. I want to plot the following signal in matlab but I am not sure how to do this with the unit step response involved. Here are some statements that generate a unit impulse, a unit step, a unit ramp, and a unit parabola. sys = tf(4,[1 2 10]); Plot the impulse response. figure. You might also have to use the text function. bode automatically determines frequencies to plot based on system dynamics. To plot a set of coordinates connected by line segments, specify X, Y, and Z as vectors of the same length. I would like to remake the size of my plots in matlab. Define y1 and y2 as sine and cosine values of x. ksi - kip per square inch. Units; f. C = imread( "ngc6543a. 81 meters per second squared. Example: [0. 74 . y = cos(x); plot(x,y) Change the tick value locations along the x -axis and y -axis. H = tf([2 5 1],[1 3 5]); pzmap(H) grid on. Name = 'Daily Count' ; ts1. Sorted by: 10. fontsize(ax1,scale=1. psi - pound force per square inch. ksf - kip per square foot. If both arguments specify multiple variables, they must specify the same number of Jul 16, 2012 · Even though annotation uses normalized as default units, you can associate these objects to the current axes (gca) and use data units for setting X and Y properties. This can be checked by commenting one command at a time and obtain the response plot. Plot Complex Numbers. Until you use hold off or close the window, all plots appear in the current figure window. Label the x -axis and return the text object used as the label. Create a time series object, set the start date, and then plot the time vector relative to the start date. By default, MATLAB® clears the figure each time you call a plotting function, resetting the axes and other elements to prepare the new plot. Plot a unit circle using sine and cosine functions in MATLAB. Click on any of the Axes. Use physical units, converting units, checking unit consistency and compatibility. MATLAB ® automatically selects the contour lines to display. metre. 2f to print two decimal places. For 3-D plots, use the zlim function. MATLAB® assumes symbolic variables are dimensionless. 01*square (2*pi*0. 0000e+003 100. To be able to rotate the second ellipsoid in the next Plot vectors that are normal to the surface defined by the function z = x e-x 2-y 2. 1×3 duration array. Plot the curve for and . H = tf(4,[1 2 10]); C1 = pidtune(H, 'PI' ); Sep 22, 2018 · Copy. Accepted Answer: Hamoon. Therefore, the best way seems to be to get the actual outputs of spectrogram and plot the image yourself, without unit conversion: [~,F,T,P] = spectrogram(x,128,120,128,2e3,'yaxis'); imagesc(T, F, 10*log10(P+eps)) % add eps like pspectrogram does. function h = bodef (x) P = bodeoptions; P. 2 0. All units are measured from the lower-left corner of the figure window. I do think that this would be a useful type of command to have in the core Matlab plotting library, and may submit a feature request for it. Line plots are a useful way to compare sets of data or track changes over time. Use patternCustom to plot the magnitude of directivity, phi, and theta angle values as the 3-D radiation pattern. And of course if your ending angle is more than 2*pi than your starting angle, you'll get some overlap. My problem is that the data is "loaded" to my matlab code, for instance: Mar 16, 2014 · Copy. L = findall (fig, 'String', 'Time (seconds)'); L. The datetime data type represents points in time, such as August 24, 2020, 10:50:30 a. meter or u. Plot Dates and Times. Plot Time Series Object with Specified Start Date. 0000e+003. k = sin(pi/2); Define y1 and y2 as sine and cosine values of x. First, you need to find the position of the axes in normalized figure units. You can verify unit dimensions, convert between units, and create your own custom units. Compass Labels on Polar Axes. To modify aspects of a figure, change property values. Polar Plots. plot3 (X,Y,Z,LineSpec) creates the plot using Aug 25, 2019 · I would like to have the units on the axis from a Matlab plot with the correct form like SIunitx in LATEX. Get the position vector by calling the tightPosition function. We divide each component with this magnitude. In the opened Bode Diagram figure window, go to View -> Property Editor. I was using a for with plot rcos-rsin, but it was very slow. Then, find the gradient of z by specifying the spacing between points. You can use a similar approach to add variable values to axis labels or legend entries. Scale up the font size of the scatter plot, and change the font size of the other two plots to 10 pixels. May 9, 2023 · The plot() function. startAngle = 0; endAngle = 2 * pi; numberOfSegments = 360; % Whatever you want. patternCustom(helixdata(:,3),helixdata(:,2),helixdata(:,1)); Use the same data to plot the 3-D radiation pattern in the rectangular coordinate system using pattern plot options. Author Circles , MATLAB PROGRAMS. D = hours(1:3) D =. I defer to bodeplot because it allows some customization. impulse(sys) The impulse plot automatically includes a dotted horizontal line indicating the steady-state response. Dec 4, 2013 · Hello! I need to plot a lot of circle of a precise size every small time-step. As you have just seen, MATLAB has a built-in plot() function that can accept single or multiple vector inputs. theta = linspace (startAngle, endAngle, numberOfSegments); If the starting and ending angle are not 0 and 2*pi, then you'll get a partial circle (arc). Plotting Large Graphs. Call the xline function to display a dotted vertical line at the upper limit of the first interval. Watch on. There is no support for r or theta labels. Color; ax. function h = circle (x,y,r) hold on. FreqUnits = 'Hz'; h = bodeplot (x,P); Star Strider on 22 Sep 2018. 2) fontsize([ax2 ax3],10, "pixels" ) To undo the font size changes across all the tiled plots, reset the font sizes and units to their default values. When you zoom into a plot, fplot reevaluates the plot automatically. Jun 3, 2019 · Apparently spectrogram doesn't have an input option to avoid the unit conversion. So, what you have to do is pick out an axes position in r and theta terms, pol2cart those into x y components, and text () at that position. Oct 23, 2019 · I have a question. To plot multiple sets of coordinates on the same set of axes, specify at least one of X, Y, or Z as a matrix and the others as vectors. These examples show how to create line plots, scatter plots, and histograms in polar coordinates. surf(X,Y,Z); axis equal. Specify the axis limits using the xlim and ylim functions. Get. Because of reevaluation on zoom, fplot reveals more details. z = x + y i, where x and y are real numbers, and i is the imaginary unit, which is defined as i 2 = - 1. If no current figure exists, plotedit will create one. polar () is pretty much plot () of pol2cart () behind the scenes. 82]. MATLAB Program: syms t; t=0:0. Add an axis label to identify the first interval. Create a simple line plot and add an ellipse annotation to the figure. 1: Step Response using Matlab Transfer Function Note: As mentioned in the text, both IMPULSE and STEP commands produce the same plot. By changing property values, you can modify certain aspects of the text. t = text(0. In the 'Property Editor - bodeplot' section, select 'More Properties'. Subsequent graphics functions, such as plot, target the active side. semilogy (X,Y) plots x - and y -coordinates using a linear scale on the x -axis and a base-10 logarithmic scale on the y -axis. e. By default, the units are normalized to the figure. x = linspace(1,10); tiledlayout(2,1) % Top plot. The plot displays the magnitude (in dB) and phase (in degrees) of the system response as a function of frequency. fig = figure (); lsim (G,sq_wave,t); Warning: Simulation will start at a nonzero initial time. In a MATLAB® figure window, you can right-click on the plot to view other impulse-response characteristics such as peak response and transient time. [X,Y] = meshgrid (linspace (-1,1)); Jan 9, 2017 · Link. Plot the poles and zeros of the continuous-time system represented by the following transfer function: H ( s) = 2 s 2 + 5 s + 1 s 2 + 3 s + 5. The default value for the axes Units property is normalized to the parent figure dimensions. Contour Plots. step allows you to plot the responses of multiple dynamic systems on the same axis. Thanks for the help! If I do X = 25; fprintf ('The answer is %. Use the vector to draw a red rectangle around the image that is currently displayed in the axes. axPos is [xMin,yMin,xExtent,yExtent] Then, you get the limits, i. Axes properties control the appearance and behavior of an Axes object. Aug 30, 2020 · I am trying to create 2 random points that have vectors that pass them in a random direction. Use dot notation to set properties. Variables will display in the command window or plot, etc. Use them to calculate z. Once I get the code to run in Matlab, I get a weird looking ellipse and it doesn't look "pretty" like the one my professors gave us as reference which I have attached. t = (-1:0. Magnitude is length of the vector, so it will be 101*1. If you want the axes to choose the appropriate limits, set the limits mode back to automatic. An exploratory plot of your data enables you to identify discontinuities and potential outliers, as well as the regions of interest. Then, use the sphere function to plot three spheres with different numbers of faces into different tiles of the chart by specifying the axes. I mean that I want my X axes to have the same size with the Y axis. Because units are symbolic expressions, numeric inputs are converted to exact symbolic values. Plot the values on a map using the geoscatter function. Therefore, this syntax is Plotting in Polar Coordinates. C = 1; fill(X,Y,C) Two or more patches. Aug 17, 2015 · Plotting Liner and Circular Convolution with MATLAB; Plotting Unit Impulse, Unit Step, Unit Ramp and Exponential Function in MATLAB; Plotting sin and cos Function in MATLAB; Implementing Digital Negative of Image in MATLAB; Implementing Digital Negative and Grayscale of Image in MATLAB; Implementing DCT and IDCT in MATLAB; Implementing DFT in Jan 21, 2021 · This video outlines the essential concepts behind the use of units in MATLAB® in such a way that they can be accessible to every user - from beginner to adva Sep 24, 2012 · How to display units (micro, mili,mega. Text properties control the appearance and behavior of a Text object. Copy Command. 0000e+003 200. Modify axis limits and tick values, add grid lines, combine multiple plots. The variables share a common x -axis. Pass the functions a two-element vector of the form [min max]. in terms of those units. ^3 - 12*x; plot(x,y) dim = [. Specify the other coordinates as a matrix. The x-axis labels would be something like: 0. 0000e+000 50. 0000e+003 150. Check if the units have the same dimensions (such as length or time) by using checkUnits with the 'Compatible' input. Mar 6, 2014 · For axesPosition in default normalized units and windowPosition in default pixel units, using your code with a square axis doesn't give an aspect ratio of 1, whereas the two lines I gave does. Specify the labels using a cell array of character vectors. 5,1. If sys is a multi-input, multi-output (MIMO) model, then bode Aug 11, 2023 · Here is a MATLAB function that plots a circle with radius 'r' and locates the center at the coordinates 'x' and 'y': Theme. You also can combine multiple plots, either using separate axes in the same figure, or by combining the plots Generate coordinates of an ellipsoid with a center at (0, 0, 0) and semiaxis lengths (1. Then, find the normal vectors. Zoom into the plot using zoom and redraw the plot using drawnow. Axes appearance and behavior. Create axes with a y -axis on the left and right sides. You can use these options to customize the Nyquist plot appearance using the command line. % a new bode () command that has Hz as default. First, create a grid of x-and y-values that are equally spaced. That is what I would do. This example shows how to create line plots with dates and times that are stored as datetime and duration arrays. Add a title with the value of sin ( π) / 2. Line plots, log plots, and function plots. Call the nexttile function to create the axes. sqrt (x^2+y^2)=1. Repeat the zoom 6 times to view smaller-scale details. contour (X,Y,Z) specifies the x and y coordinates for the values . This example shows how to plot complex numbers in MATLAB®. In our example the inputs were e_stress and e_strain but keep in mind they can be any variable that is a vector to generate plots. Again r_unit will be a unit vector and it shall have three components so it;s size is 101*3. This property affects the Position property. Copy. Axes Appearance. You can modify certain aspects of polar axes in order to make the chart more readable. m. Set the x -axis limits to the first interval, [0 15]. You can plot the data in a 2-D or 3-D view using either a linear or a logarithmic scale. I don't have any origin or any end pont just the direction cosine. The lower-left corner of the figure maps to (0,0) and the upper-right corner maps to (1,1). To plot one data set, specify one variable for thetavar and one variable for rhovar. This table classifies and illustrates the common graphics functions. Here is an example of plotting a single arrow. Apr 15, 2020 · I have to plot a given function where the X-axis must be in terms of a constant a0 from x = 0 to 70*a0 and the Y-axis must be in terms of 1/a0. I tried creating 2 random points and 2 random unit vectors and using the function quiver to create the graph, Plot the gradient and contours of the function z = x e - x 2 - y 2. x = linspace(0,2*pi); Mar 4, 2015 · There are still many modifications to do to get the final plots, but at least this is a starting point. These units act as symbolic expressions and can be used with Symbolic Math Toolbox™ functions. What I want to do is to have a single plot as opposed to the two plots that I'm Feb 5, 2018 · What I would like to do was to change the x-axis labels, that are [0:0. In plot edit mode, you can label axes, change line styles, and add text, line, and arrow annotations. Sign in to answer this question. Plot data against the left y -axis. It turns out that the labels that are visible are in a separate axes that is marked Visible off and Pole-Zero Plot of Dynamic System. This means the shape of the figure window determines the shape of the position rectangle. Aug 9, 2016 · There are 3 ways to change the units of a Bode Plot. ax = gca; c = ax. 1 hr 2 hr 3 hr. lon = (-170:10:170); lat = 50 * cosd(3*lon); A = 101 + 100*(sind(2*lon)); Plot edit mode allows you to use a graphical interface to edit and annotate plots easily. If tbl is a table, then stackedplot plots the variables against row numbers. Feb 5, 2020 · I want to plot a matrix (37 x 10) represented by sum_ET10 with 2 different y axis scales; km^3/year (original unit) on y axis lhs & mm/year (new unit) on y axis rhs. To check you can find the magnitude of r_unit, you will get all 1's. Jan 28, 2015 · Answers (1) If you mean tick labels, you would have to do that manually, using the get and set functions, for example along with the appropriate 'Xtick' and 'XTickLabel', and other properties. If you change the units, then it is good practice to return it to its default value after completing your computation to prevent affecting other functions that assume Units is the default value. Use and manipulate physical units of measurement. Scatter and Bubble Charts. axPos = get(gca,'Position'); %# gca gets the handle to the current axes. *t,50); %% plot the response. I actually want to get rid of 10^-11 and write appropriate units in y-label There are various functions that you can use to plot data in MATLAB ®. f = figure; u = f. The first half of the plot shows the free evolution of the system from the initial state values [-0. Fortunately, they're set to 'normalized' by default. Keep the current axis limits by setting the limits mode to manual. The length of the vector must match the length of one dimension of the matrix. Turning on the grid displays lines of constant damping ratio (zeta) and lines of constant natural frequency (wn). Plot x and y into ax1. Sign in to comment. One where you can add a second set of tick-marks/units automatically locked to the view set using the initial set. Use the quiver function to plot the gradient and the contour function to plot the contours. The MATLAB figure window displays plots. ^2) t = xlabel( 'Population' ); Use t to set text properties of the label after it has been created. aa cx dy rh oo hl yh bc rv nk