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# Sandro Lecci

19 total contributions since 2017

Ph.D. in Neuroscience, I am passionate about signal analysis and problem solving.

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How can I create a colormap with a different colorscale for positive and negative numbers
Dear Richard, a colormap is essentially a nx3 matrix with the specification of RGB (3 columns) and the resolution in n lines....

mehr als ein Jahr ago | 0

How to display a matrix as a picture?
Hi, What about the function imagesc ? A = [0 1; 2 3]; imagesc(A); colorbar; Best,

mehr als ein Jahr ago | 0

For-loop, inserting loopcount into string output
Dear Emil, I haven't check whether my proposition works, I let you try it. function data = dataLoad(filename) Q = r...

mehr als ein Jahr ago | 1

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How to make this plot
Hi Stefano, Is this what you are trying to do? <</matlabcentral/answers/uploaded_files/120986/Matrix.png>> if yes then ...

mehr als ein Jahr ago | 1

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put bars in bar graph in ascending order?
Hi, Use the sort function as following: ... homepop = pop(:,2); [~, I] = sort(homepop, 'ascend'); % remove/comm...

mehr als ein Jahr ago | 0

ecg signal frquency contents
Dear Moh, I recommend you substract the signal average to get rid of the very low frequencies. Just write this: Y = f...

mehr als ein Jahr ago | 0

Need help moving text inside of a figure window
Dear Jacob, In your code you miss the instruction to change the direction of the text. The text object is defined only by the...

mehr als ein Jahr ago | 0

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How to set color of scatterplot bars?
dear z8080, Somehow the histograms are plotted with a FaceAlpha value of 0.6. This makes the red color looking "flatter". To...

mehr als ein Jahr ago | 2

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how to create a line plot with data from excel?
Dear Minka, I suggest you use the function line instead of plot. I would do something like this, and I let you change the val...

mehr als ein Jahr ago | 0

How do I put multiple lines of text in the title/question section? (probably a uicontrol question)
Dear leon, try using this: dlgTitle = sprintf('Someone\n\t hello?'); % -> \n goes to a new line, and % -> \t add...

mehr als ein Jahr ago | 0

Changing values of axis
Hi Alexander, To change the limits of the axis do the following: set(gca, 'YLim', [0.1,1]) However, your data will n...

mehr als ein Jahr ago | 0

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Finding peak value and peak arrival time from a time-domain plot and store it into a matrix.
Hi Syed, are you looking for the max value and its index ? peakValues = NaN(360, 2); %column 1 is peak value, column 2 i...

mehr als ein Jahr ago | 0

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Axis fontsize and text fontsize not matching
Dear Royk, try this: lbl = 'These two labels should now have the same fontsize 10' ; figure(1);clf set(gcf,'positio...

mehr als ein Jahr ago | 0

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How I can plot a 2D in Matlab?
Dear sama, ckeck the documentation of the surf function or the scatter3 function. https://ch.mathworks.com/help/matlab/ref...

mehr als ein Jahr ago | 0

create 2 scatterplots side by side
Dear mini ayachi, you need to add a line after you declare each subplot to plot the data into the scatter plot. subplot(...

mehr als ein Jahr ago | 0

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How to access data in a cell array
Hy Auryn, myCell{1}(2:60,1) should do the stuff. Best, Sandro

mehr als ein Jahr ago | 0

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Can I make the loop not count the t-waves in a ECG signal?
Dear Maria, Consider using the function findpeaks with the 'MinPeakDistance' argument (that works as a refractory period) ...

mehr als ein Jahr ago | 1

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