i know the scale but when i use imagesc function the image doesnt show me the right size of my spot. what am i doing wrong?

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Sobia Rehman
Sobia Rehman 2022-1-10
评论： Image Analyst 2022-2-16
clear all;
close all;
Scale = 29.4/64; % Pixelscale of the image
[FileName, PathName] = uigetfile({'*.txt','PHASICS Txt File';'*.*', 'All Files (*.*)'},'Pick a file');
PhaseFile = fullfile(PathName,FileName);
PhaseData=importdata(PhaseFile,'\t'); % Read header less tab delimited txt file[Ny, Nx] = size(PhaseData);
[Nx, Ny] = size(PhaseData);
figure
imagesc(PhaseData); % Plot the data

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Image Analyst
Image Analyst 2022-1-10
PhaseData is structure. you need the Data field
theImage = PhaseData.Data;
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Sobia Rehman
Sobia Rehman 2022-2-16
Finally I have got this using this code
clear all;
close all;
%nBulk = 1.4536;
Scale = 29.4/64; % Pixelscale of the image
[FileName, PathName] = uigetfile({'*.txt','PHASICS Txt File';'*.*', 'All Files (*.*)'},'Pick a file');
PhaseFile = fullfile(PathName,FileName);
PhaseData=importdata(PhaseFile,'\t'); % Read header less tab delimited txt file[Ny, Nx] = size(PhaseData);
[Nx, Ny] = size(PhaseData);
XData = [0, Nx] * Scale;
YData = [0, Ny] * Scale;
imagesc(XData, YData, PhaseData);
This shows me the picture now in real life units.
Thanks heaps for your help.
Image Analyst
Image Analyst 2022-2-16
You must have floating point image outside the range of 0-1. So try it this way:
XData = [0, Nx] * Scale;
YData = [0, Ny] * Scale;
imshow(PhaseData, [], 'XData', XData, 'YData', YData);
axis('on', 'image')

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