How can I save a resized figure, with extended name 'jpg'?

I want to save a figure with specified size (for example 1000*400 pixels), rather than the default size. I have resize the figure with property, 'position’,like this:

plot(rand(3,1)); set(gcf,'position',[0 0 1000 400])

When I use "saveas" to save the figure into a file with extended name 'jpg', the figure size is default size, not the specified size. How can I save a figure into JPG (or png, tif, emf) with speicfied size?

Thanks in advance.

Answer 1

[Image Analyst]

I believe with export_fig() you can specify pixel dimension sizes.

http://matlab.wikia.com/wiki/FAQ#How_do_I_save_my_figure.2C_axes.2C_or_image.3F_I.27m_having_trouble_with_the_built_in_MATLAB_functions.

[fujian chang]

Thank you. I'll try it now.

[fujian chang]

Thank you! The export_fig function works well!