Dave B

MathWorks

Last seen: 3 días hace | Con actividad desde 2020

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I am a software engineer at MathWorks. My work focuses on graphics and charting.

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Respondida
How can i change the colours of segmentation on a chart pie?
Starting in R2023b we have a new piechart which is a little easier to change colors for. Here are some demos with our built in c...

13 días hace | 1

Respondida
Ytick label is repeated and not alligend correclty
The reason the YTickLabel is aligned to the left is because MATLAB padded the values with spaces to make a character array. This...

14 días hace | 0

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How to create bar chart with x axis labels as grouped for different data
Unfortunately MATLAB doesn't have a builtin feature for creating hierarchical rulers. An alternate workaround to the one dpb lin...

alrededor de 1 mes hace | 0

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Respondida
Add shared colorbar on some rows only
You can accomplish this kind of layout by nesting tiledlayouts, and leveraging the TileSpan property. Below, I create a 3 x 1 t...

alrededor de 1 mes hace | 2

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Respondida
ButtonDownFcn does not work on a plot
How about if you set p3.PickableParts = 'none'? If you're clicking the part of p2 that is on top of p3, then MATLAB is probably ...

alrededor de 2 meses hace | 0

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Respondida
How to shift streamslice() plot into background?
I think the issue you're running into here is this last argument you're passing into streamslice. The 1 there is causing the lin...

4 meses hace | 2

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how to set colormap minimum and maximum for imagesc in tiledlayout
You can grab the Axes object, use gca, or use nexttile to refer to a location in the grid: tiledlayout(1,3); ax = nexttile; ...

4 meses hace | 2

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Saving a Plot on a Figure with Transparency Ignores the Transparency
Transparency for lines isn't supported, and so the alpha channel is lost when you save and load. A workaround is to use patch, w...

6 meses hace | 0

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Respondida
Boxplot group within group
To choose colors for your overlay, you can create multiple Scatter objects, or you can create one scatter object with multiple c...

6 meses hace | 0

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Respondida
Plotting a circle using geoplot
Would wrapTo360 help here? lat=-42; lon=173; r=20; [latr,lonr] = scircle1(lat,lon,r); nexttile geoplot(latr,lonr,'LineWi...

6 meses hace | 0

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Respondida
How to change the dimensions of a matrix?
You could use permute to do this, though it's maybe worth noting that you can concatenate matrices regardless of the shape (you ...

6 meses hace | 1

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How can I list individual year from the datetime table?
The splitapply function makes this pretty easy - here the idea is to split the data by year, and then apply a function that turn...

6 meses hace | 1

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plot function legend is wrong.
The legend is labeling the first line in the chart rather than the last one. An easy way to specify which line should be labeled...

7 meses hace | 0

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Force tiledlayout('flow') to layout vertically
Starting in R2023a you can use the 'horizontal' and 'vertical' tile arrangements to accomplish layouts that are dynamically size...

7 meses hace | 1

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Respondida
How to reorder a categorical axis?
Three options to change the order, depending on where you want to change it: Option 1: You can use reordercats to re-order th...

7 meses hace | 0

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Respondida
How do I add a colorbar to a polarscatter chart?
I think you can simplify this task by passing the data directly into scatter deggorad=pi/180; azi=[0;36;72;108;144;180;216;252...

9 meses hace | 0

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Respondida
Can't change xlabel font because of diacritics (č, ř, š, ...)
The error you're seeing is because of the tex interpreter, although I don't reproduce it with the same characters. If you're not...

9 meses hace | 0

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Respondida
Error bars for every other bar
I think what you're trying to do is put the errorbars on the first bar series? You can do this using the XEndPoints from the bar...

10 meses hace | 0

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Respondida
How to color the colormap with a set of hexadecimal colors?
Starting in R2020b you can use the validatecolor function to convert hex to rgb (using the 'multiple' option to convert more tha...

10 meses hace | 1

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Respondida
How can I write multiple number (digit) in my title?
I think what you're saying is you don't want to compute how many %d's to include and just have all the value separated by commas...

alrededor de 1 año hace | 0

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Respondida
I'm trying to duplicate elements in the GUI, buttons to be specific.
If you're making your app in a uifigure (e.g. with app designer) you can create a button with uibutton, if you're making your ap...

alrededor de 1 año hace | 0

Respondida
How to extract different element between two cell array?
How about using ismember combined with not (~)? X1 = {'A','B','C','D'} x2 = {'A','B','C','D','E','F','G','H'} X3 = x2(~is...

alrededor de 1 año hace | 0

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Respondida
loop with subplot in MATLAB
The first loop creates a figure for each cell, but the next too loops don't. Did you want a figure for each cell? acceleration=...

más de 1 año hace | 0

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Respondida
Plotting a graph with different colors depending on different vectors
You can plot multiple vectors by either: passing them into plot as a matrix, plot will make a line for each column of the matri...

más de 1 año hace | 0

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Geographical maps in Matlab
How about something like this? paris = [48.5 2.2 46]; london = [51.5 0.1 48]; newyork = [40.7 -74 54]; natick = [42.3 -71.3...

más de 1 año hace | 0

Respondida
UI doesn't show buttongroups but doesn't give any error
The problem you're running into is just the order in which you set Units and Position: bg(i).bg = uibuttongroup(fig,'Title',['S...

más de 1 año hace | 1

Respondida
error in the code
It looks like you're passing in a matrix, but I think you want to pass in a vector. Try transposing t? t=linspace(0,2,16000)'...

más de 1 año hace | 0

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Converting text to datetime stamp in Data Table
It's a little difficult to understand exactly what's in TMX2DataFile3TCs25through48 from the code, I think the dates you pasted ...

más de 1 año hace | 0

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I want to have specific values on y-axis of the plot.
To set the y tick values, you can use the YTick property on the Axes. You can use gca and set to apply these to the current axes...

más de 1 año hace | 1

Respondida
need help for adding a error bar
I think the problem you ran into was that you were calling errorbar with 4x4 matrices for x and y, and 1x12 vectors for yneg and...

más de 1 año hace | 0

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