Answered
Colour range in a surfplot
By default, a surf plot uses faceted shading, which means that each face is a solid color, determined by a single vertex in that...

5 years ago | 5

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Answered
How to change the origin from (0,0) to different coordinates in a plot
You don't need to move the axis; you need to provide x-values for your data. Right now, you're using the ydata-only option for ...

5 years ago | 0

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I got "The expression to the left of the equals sign is not a valid target for an assignment."
As others have pointed out, i is already assigned the value you want by default. But assuming it weren't, the proper way to ass...

5 years ago | 0

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Create a Matrix with Specific Pattern for Changing Values
Create a grid of values, then unwrap: xval = [-3*pi/4 -3*pi/8 0]; [a,b,c] = ndgrid(x,x,x); x = [c(:) b(:) a(:)]

5 years ago | 0

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How do I insert multiple vectors as diagonals in the same matrix?
You're close... you just need to add the matrices together: A = diag(v,1) + diag(v,-1) + diag(v1,0)

5 years ago | 0

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Answered
How to concentrate matrices of different row length (same column length) into one matrix by unfolding each of the matrices to the smallest row length conatining numbers not nan
Do any of your matrices have non-trailing blank/all-NaN lines that you want to preserve? Or are you just trying to strip out th...

5 years ago | 2

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find the shortest path
Take a look at graph and digraph objects; the shortestpath function provides several different algorithms to calculate this for ...

5 years ago | 2

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how to use color sets in maps by defining intervals in matlab (for example: lower than 10 , between 10 and 50 , between 50 and 200, between 200 and 1000, greater than 1000). thanks
What are you trying to do with those color intervals? Create a colorbar? Or perhaps a contour plot? If the latter, you can tr...

5 years ago | 1

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Remove data elements of the legend from figure
Technically, you can delete parts of a legend, but I only know how to do it via code, not via to UI. I should mention that us...

5 years ago | 6

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Answered
How to plot four subfigures in one figure? Rather than subplot
I think the only slightly difficult part of this would be the modified x-ticks. When I create adjacent axes like this, I prefer...

5 years ago | 1

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Answered
Matrix dimension does not agree when using .*
When you calculate Y = diff(X,n) where X is a vector, Y will have length length(X)-n. So you need to adjust X accordingly wh...

5 years ago | 0

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Answered
How to display the data points on my graph?
Add a hold after your scatter plot: scatter(rand(10,1), rand(10,1)); hold on fplot(@(x) x, [0 1])

5 years ago | 0

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Answered
Plot a drawn, filled shape at each data point
A single multi-faceted patch will render more quickly than lots of individual rectangles. And this option allows your marker to...

5 years ago | 0

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Why am I getting the error "Array indices must be positive integers or logical values."?
My guess is you have a variable named eig sitting in your workspace. So when you try to call the eig function, the variable is ...

5 years ago | 12

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Answered
How do you format file names in a Mac?
You've got a few typos in your filename generator not related to file separators... for example, when i = 1, you build the file ...

5 years ago | 0

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Answered
Why does Matlab say my function is undefined?
If you strip out most of the commands, the main structure of your code looks like this: n=input('Enter an integer for two, th...

5 years ago | 0

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netcdf reading parameters "Error using double Out of memory. Type HELP MEMORY for your options"
What does the ncdisp command tell you about the variable sizes? Just paste the output of the following: ncdisp('dataset-oc-med...

5 years ago | 2

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Answered
Why does this data file cause Matlab to lock-up?
This is just a guess, but... Did you have a script named TrajData.m open in the editor at the time you first made the typo? Mat...

5 years ago | 1

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attach a field to a shapefile and plot it
Do you need to actually add a new field to the shapefiles themselves? Or just add it to the read-in structure in Matlab? If ...

5 years ago | 2

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Answered
How can I write an unformated string to file, i.e., without interpreting % and any other special characters
You can pass the string as a parameter to a simple '%s' formatter, rather than using the string itself as a format: >> fpri...

5 years ago | 2

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Answered
How to use datenum with a date represented as a scaler?
Is your final goal to convert to a datenumber or an year-month-day array? As mentioned in the other answers, if you're using a ...

5 years ago | 2

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Answered
Recreating a figure from its handle after it has been closed
No, the figure handle itself does not contain that information. The graphics objects handles loose their link to the relevant d...

5 years ago | 0

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Graph Plotting! Which Function Shall I use?
A beeswarm plot might be an option... the <https://www.mathworks.com/matlabcentral/fileexchange/37105-plot-spread-points-beeswar...

5 years ago | 1

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How do I read, change and write data back into the same txt file, at the same place?
To replace a specific bit of text in a text file, you're going to have to rewrite the entire file. Assuming the files above are...

5 years ago | 6

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Answered
Plotting hitmap with different box size
You can create this pretty easily using patches: The test data: c = rand(20,9)*2 - 1; % Color value s = c; ...

5 years ago | 1

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Answered
How can i crop a figure
Just to clarify, when you say "like a map", you don't mean it's a map axis (Mapping Toolbox), do you? Cropping a map axis is mu...

5 years ago | 0

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How can I display elements of a 2D matrix as blue, green and red squares?
You just need to set the color limits: set(gca, 'clim', [0 10]);

6 years ago | 0

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Answered
How to Draw a Line Between Two Points on Different Axes
I suggest using annotations paired with the very handy <https://www.mathworks.com/matlabcentral/fileexchange/13634-axescoord2fig...

6 years ago | 1

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Calculate number of hours below a threshold temperature
I think you should be able to accomplish this by retiming twice; once to fill in any gaps with whatever method you prefer, and t...

6 years ago | 2

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Answered
My circular_prime function only works well for two_digit input
I'd suggest looking at the |circshift| function.

6 years ago | 1

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