World coordinates XY scale
3 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi Matlab Answers,
I'm trying to plot a spacetime image with positions on the y-axis and time on the x-axis.
When displaying the image using
imshow(ST_image);
axis on;
% size(ST_image) = [500 512]
the display is 1:500 x 1:512, as expected.
When trying to change to physical dimensions, e.g.
Space_limits = [40 60]; % mm
Time_limits = [-0.01 0.1] %s
the axes are on very different scales. This causes the displayed figure to collapse the image to effectively a vertical line and I can't seem to get it to reshape.
I've tried imref2D for world coordinates, setting the XData, YData properties, scaling the axes aspect ratio, etc. I'm sure this is just a figure and/or axes property that I'm missing, but would be very grateful if somebody knew offhand.
ST_ref = imref2d(size(ST_image))
ST_ref.XWorldLimits = Time_limits;
ST_ref.YWorldLimits = Space_limits;
f = figure;
imshow(ST_image,ST_ref); axis on;
%f.XData = Time_limits;
%pbaspect([1 1 1])
Thanks for your help!
0 Kommentare
Akzeptierte Antwort
Kelly Kearney
am 1 Mai 2020
The imshow function automatically sets the DataAspectRatio to be [1 1 1], i.e. the same effect as axis equal. To undo this, set the mode back to manual.
set(gca, 'DataAspectRatioMode', 'auto');
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Line Plots finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!