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Benjamin Kraus

MathWorks

Last seen: 3 days ago Active since 2013

Benjamin Kraus is a developer on the MATLAB Graphics and Charting team at MathWorks.

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Answered
Break while loop app designer
Consider this example (you should be able to use this same pattern within App Designer with only a little tweaking): function s...

11 days ago | 0

Answered
TabGroup: How to execute code before selection changed?
I'm curious, why do you need the code to run before switching tabs? I don't believe this is possible without basically implemen...

11 days ago | 0

| accepted

Answered
Workflow Matlab with Git
Welcome to the world of version control. Git is an amazing and powerful tool, but it can take some getting used to. I would sug...

11 days ago | 1

| accepted

Answered
Brushing when plotting a 2D Matrix with linkdata: brushes whole row of matrix instead of single data points.
The reason for the behavior you are seeing is because when you enable data linking (via linkdata) and then select data points, y...

18 days ago | 0

Answered
i have a loop that generates an image everytime how can I save the figures?
I can't see any obvious bugs in your code. As written, it should save a copy of all figures that you opened in your loop. Are yo...

18 days ago | 1

Answered
Issues with CurrentPoint in R2021b
We've seen issues in the past with CurrentPoint being slightly off, and we are investigating them. Can you provide a little more...

1 month ago | 1

Answered
calling subfunctions with handle
You can call a function from a function handle by appending parentheses to the end of the variable name, even if there are no in...

1 month ago | 1

Answered
Generate an indexed image
Are you trying to create an indexed image in MATLAB? Or are you asking what programs (aside from MATLAB) can be used to create i...

2 months ago | 0

Answered
Can I index a matrix on the same line it's created?
When I first read your question, I assumed this was not an acceptable answer: clc, clear all; coordinates = [6,2;-4,8;-5,-1;3,-...

2 months ago | 1

| accepted

Answered
Wait until user press return key to continue script
Another option is to use waitfor along with a WindowKeyPressFcn. x = rand(1,41); y = 1:41; H(1)= plot(x,y,'r.'); H(2)= line(...

2 months ago | 1

| accepted

Answered
Wait until user press return key to continue script
One option is to add a WindowKeyPressFcn that runs the rest of your code. Something like this: x = rand(1,41); y = 1:41; H(1)...

2 months ago | 1

Answered
I have a contourf function constituted by x, y and z vectors (It is a large matrix). Then, I would like to find the x, y and z values corresponding to certain x and y vectors.
I'm not sure I completely understand your question, but I think you are misusing meshgrid in your code example above. Does this...

2 months ago | 0

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Answered
Adjusting figure size (2019b)
On axes the OuterPosition and InnerPosition (which is equivalent to Position) are linked to one another. The difference between ...

2 months ago | 1

Answered
how can I custom a mask matrix by giving black color to values equal 1 and transparency to NaN values?
I'm not 100% sure what you are asking, but if I understand your question correctly I don't think what you are asking can be done...

2 months ago | 0

| accepted

Answered
Histogram with two axes
If I understand correctly, you want two y-axes: one with the real numbers and another with relative values. There is no built-i...

2 months ago | 0

| accepted

Answered
I want to draw 2 moving points in a graph. Please help with the easiest code as I m just a beginner.I tried with x(i), y(i) but only 1 moving point I could get. Please help
There are a few mistakes you are making in your script. You are calling hold on then following it with clf. clf is going to cle...

2 months ago | 0

| accepted

Answered
How can I plot earth_sphere(varargin) correctly in an Matlab app tab
Two things you can try: Set the NextPlot property on the UIAxes to 'replace' before calling earth_sphere (app.UIAxes5 = 'replac...

2 months ago | 0

Answered
Bug in R2021a with current Point of UIAxes
The CurrentPoint property on UIAxes will always reflect the last click detected anywhere in the figure. That is how CurrentPoint...

2 months ago | 0

| accepted

Answered
Changing colour of plotted shape when the mouse hovers it?
Here is a much more complicated version that I think does what you wanted (although I'm not sure). This version figures out whi...

2 months ago | 0

Answered
Changing colour of plotted shape when the mouse hovers it?
You cannot change the color of a single side of a polygon object, so I think your only option is to overlay a line over the side...

2 months ago | 0

| accepted

Submitted


Thermometer Chart
Create a thermometer style chart with a stem, bulb, and desired labels.

2 months ago | 1 download |

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Submitted


Spike Raster Plot
A spike raster plot from spike time stamps with optional trial and group data.

2 months ago | 11 downloads |

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Answered
Playing with matrix and putting in number values
There seems to be a few things missing from your description, such as where the number 12 comes from, and how you want to handle...

4 months ago | 1

| accepted

Answered
stock plots, errorbars in a growing variable.
I'm not sure I completely follow your question, but I think you are asking about using handles to graphics objects. For example,...

4 months ago | 1

| accepted

Answered
Reorganize table and make groups of rows to columns
The command you are looking for is called unstack. For example: newtbl = unstack(origtbl,'Return','Permno')

6 months ago | 1

Answered
I want to draw a circle on the image in MATLAB. Please help me how to draw it.
You can draw circles in MATLAB using the rectangle command and setting the Curvature to [1 1]. (I know, it is a little strange t...

6 months ago | 0

Answered
Readtable / writematrix / Excel file - how to control the format of variables in the table ?
The readtable command takes an optional options input which can be used to control how the XLS file is imported. T = readtable(...

6 months ago | 0

Submitted


Color Trajectory Plot
A multi-color line based on a 2D trajectory with corresponding color data.

6 months ago | 6 downloads |

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Answered
Assignment has more non-singleton rhs dimensions than non-singleton subscripts
The output from regionprops is a struct array (meaning, there may be more than one region, so the struct array may have multiple...

7 months ago | 0

Answered
Color-Coded Bar Graph
I suspect the issue you are having is because you are attempting to compare against a character vector incorrectly. What format...

7 months ago | 0

| accepted

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