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how to read a grey scale image in call back function and display it as matrix?
If you need to convert the image to grayscale use rgb2gray or im2gray (thanks DGM). I'm not sure what you mean to display an im...

4 months 前 | 0

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Change map coordinates to Latex Interpreter
The map axes you see is a psuedo-axes created from a patch with labels to appear as an axes. The actual axes is not visible. S...

4 months 前 | 1

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Matlab Gui: Dragging lines on plot using mouse
If you have the Image Processing Toolbox, you can use multiple ROI lines that are draggable. By assigning a listener to the lin...

4 months 前 | 0

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How to customise Polar Plots - Part 2
Thanks for sharing this, @Sam Hurrell. Something's fishy. Here's a workaround. You can set the axes' TitleHorizontalAlignm...

4 months 前 | 0

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issues about app design
> the edit area of the code view seems frozened, it only force me to edit within the area which marked with white background T...

4 months 前 | 0

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AppDesigner UIFigure WindowScrollWheelFcn disables datatips
> when I add a WindowScrollWheelFcn callback to the parent uifigure, I am no longer able to see datatips when hovering over poin...

4 months 前 | 0

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extracting values from an image with color legend
One way to see the color value is to add the color data to the data tip. When you click on or hover over one of the points, you...

4 months 前 | 0

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Counting number of elements less than value across 2d matrix
> I'd like to calculate the percent of values in part of the matrix -- i.e., from 401:440 and 1081:1360 -- where values are less...

4 months 前 | 1

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Stl file pdegplot in App designer
> pdegplot command does that but how can I use it in App Designer? pdegplot does not have an input argument or property to spec...

5 months 前 | 1

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Add individual legends to plots in a tiledlayout
Only one legend can be assigned to an axes. This poses a problem if each axes has a legend and you want to add a global legend ...

5 months 前 | 1

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Refresh FFT plot when time signal is panned
linkaxes is often used to link axes limits between multiple axes but in this case, your axes have different units and different ...

5 months 前 | 0

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Which characters are replaced by matlab.lang.makeValidName?
matlab.lang.makeValidName uses isvarname to determine if the string is a valid variable name. The doc page for isvarname state...

5 months 前 | 0

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shifting axis on both ends so graph does not have points on extreme end
In addition to axis padded which pads all axes limits, you could use ylim('padded') to only pad the y axis limits (same with xli...

5 months 前 | 0

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Is there a way to programmatically generate function signature jsons file?
> I was wondering if there was a way to generate signature jsons through MATLAB code No, MATLAB does not offer such a function....

5 months 前 | 1

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Programmatically close App Designer app after running it for a unit test
Original answer removed due to error. See discussion below. Summary of approaches (thanks to Steven Lord) use a addTeardown ...

5 months 前 | 0

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How to squeeze specific value from 4D array?
It seems like you are asking for a way to identify and retrieve every instance where the temperature value is exactly 25 within ...

5 months 前 | 0

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Unrecognized function or variable " " , when I use my function
The variable t_peaks is not defined in the fit_function. Neither is the peaks variable but this is not throwing an error becaus...

5 months 前 | 0

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how to plot a section of a circle, need help with coding the math
> The variables I have is center position (lat and long), I have right and left aperture (130° total), max range (usually 25-30 ...

5 months 前 | 0

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Appdesigner window ends up in background after uigetfile
Thanks for reporting the problem. This has been fixed in the R2024a beta release and the fix will be available in the genera...

5 months 前 | 2

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Pushbutton sends app designer panel to the back.
Thanks for describing the problem. This is a known issue (previous reports: 1, 2, and others). This has been fixed in the R2...

5 months 前 | 0

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How do I programmatically extract a 3D plot point selected by a user interactively?
Finding the nearest point in 3D space to a mouse click in a 2D representation may pose problems because depth of the mouse click...

5 months 前 | 1

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Unwanted quotation marks when appending a table in pdf report
I don't know whether there is any report generator wizardry that addresses this but a simple solution is to convert the cell-str...

5 months 前 | 1

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Plot Stacked Surfaces with Coloring Appropriate for each Individual Surface
Assuming the three surfaces are on the same axes, you can set the cdata for each surface. The cdata can be normalized so that ea...

5 months 前 | 0

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Why does my plot line appear outside the axes?
This appears to be a bug specific to the OpenGL renderer. Thanks for reporting this issue. Investigation will continue interna...

5 months 前 | 2

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Exported 3D plot into SVG shows swirly white lines between chopped subshapes in inkscape
The white lines issue has been around for a while and is an effect of how viewing software rasterizes vectors. There have been ...

5 months 前 | 0

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Scatter plot text behind plotted data when image copied.
Thanks for the info @Kirstie Beugger. Looks like a bug. When copying graphics in vector format the figure's renderer is switch...

5 months 前 | 1

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how to scale arrows
Quiver scaling can be tough to understand. We recently added the ScaleFactor property (R2024a) to help out. See this answer fo...

5 months 前 | 0

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How can i set the dimension of the arrow in a quiver plot?
Understanding quiver auto scaling When using quiver(X,Y,U,V,__), U and V are the horizontal and vertical vector magnitudes. Ho...

5 months 前 | 0

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rotate3d not working properly with matlab GUI and pcshow function
> ...the rotation of the axis is somehow buggy (everytime I klick again, it jumps to another view) and ... the cursor does not c...

5 months 前 | 0

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view() not returning [az, el] ??
The azimuth and elevation outputs are returned as two separate outputs. f = figure('visible','off'); ax = gca(f); [az, el]...

5 months 前 | 1