plot gaussian and standard deviation on my histogram

image1 = 42*randn(1,1000)+42*3;                                     % Create Data
figure('Name','A3{1}.BMd_Img_o_part1')
edges= linspace(0,255,21);
[muHat,sgHat] = normfit(image1);
pdfplot = normpdf(edges, muHat, sgHat);
figure
histogram(image1, 'BinEdges',edges,'normalization','pdf')
hold on
plot(edges, pdfplot, '-r', 'LineWidth',2)
hold off

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Fatemeh Shomal Zadeh 2020-9-9

Screen Shot 2020-09-08 at 4.21.54 PM.png

I am sorry, maybe I was not clear enough in explaining my question.

Let me explain from the beginning. I have plotted this histogram (see attachment please) and now want to have a gaussian plot which has overlab with the histogram.

Data already are in a grayscale.

imshow(Data_SWS_BMd_A3{1}.BMd_Img_o)

impixelinfo

xmin = 5;

xmax = 314;

ymin = 136;

ymax = 238;

imshow(Data_SWS_BMd_A3{1}.BMd_Img_o(ymin:ymax,xmin:xmax));

impixelinfo

image= Data_SWS_BMd_A3{1}.BMd_Img_o(ymin:ymax,xmin:xmax)

[n,m]=size(image)

id=fix(m/3)

image1=image(:,1:id);

image2=image(:,id+1:2*id);

image3=image(:,2*id+1:m);

figure

imshow(image1)

impixelinfo

figure

imshow(image2)

impixelinfo

figure

imshow(image3)

impixelinfo

edges= linspace(0,255,21);

[muHat,sigmaHat] = normfit(image1);

pdfplot = normpdf(edges, muHat, sigmaHat);

figure('Name','A3{1}.BMd_Img_o_part1')

histogram(image1, 'BinEdges',edges,'normalization','pdf')

hold on

plot(edges, pdfplot, '-r', 'LineWidth',2)

hold off

I am receiving error like this which I do not know what it is;

Error in normfit

xc = x - repmat(muhat,[n 1]);

And if I convert the image1 to the vector double it shows the graph which is not right.

I know it is becoming complicated and thanks so much for your patience. If still it is not clear I do appologize for that.

Kind regards

Fatemeh Shomal Zadeh 2020-9-9

Thank you so much , I do really appreciate you efforts.

Star Strider 2020-9-9

As always, my pleasure!

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