how to insert image to plot function plot(x,y,...image)

x=20 y=60 plot (x,y,'*') instead of * how to insert image

Answer 1

[Walter Roberson]

You can use image(x,y,ImageArray) . If you do that then the image will be plotted from

x of (x-1/2) : (x+size(ImageArray,2)-1/2)     for the pixel centers horizontally
y of (y-1/2) : (y+size(ImageArray,1)-1/2)     for the pixel centers vertically

If you want the image to be drawn smaller than (one pixel = 1 data unit) then you need to specify a vector of values for the x and y coordinates.

You can also use patch() and surf() to create images colored according to the color data that is passed in (or the optional CData parameter.)

Sometimes when people ask about this, what they are interested in is a custom marker, a shape. The easiest way to draw a custom marker is to prepare the information for it in terms of parameters that would be suitable for patch(), and then to position it a particular x and y, add that x and y to the appropriate coordinates in a patch() call.