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I'm trying to plot small images on a larger plot... Actually its isomap algorithm, I got many points, now each point correspond to some image, I know which image is it... The porblem is how to load that image and plot on the graph? One more thing I have to plot both image and the points, so, basically the images will overlap the points. Certainly, the type of image given here
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Create random data using numpy. Add a subplot to the current figure, nrows=1, ncols=4 and at index=1. Display data as an image, i.e., on a 2D regular raster, using imshow() method with cmap="Blues_r".
imshow always displays an image in the current figure. If you display two images in succession, the second image replaces the first image. To view multiple figures with imshow , use the figure command to explicitly create a new empty figure before calling imshow for the next image.
In Matplotlib, we can draw multiple graphs in a single plot in two ways. One is by using subplot() function and other by superimposition of second graph on the first i.e, all graphs will appear on the same plot.
Something like this should get you started. You can use the low-level version of the image function to draw onto a set of axes.
% Define some random data
N = 5;
x = rand(N, 1);
y = rand(N, 1);
% Load an image
rgb = imread('ngc6543a.jpg');
% Draw a scatter plot
scatter(x, y);
axis([0 1 0 1]);
% Offsets of image from associated point
dx = 0.02;
dy = 0.02;
width = 0.1;
height = size(rgb, 1) / size(rgb, 2) * width;
for i = 1:N
image('CData', rgb,...
'XData', [x(i)-dx x(i)-(dx+width)],...
'YData', [y(i)-dy y(i)-(dy+height)]);
end
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