How to make history like in Photoshop..??

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Rahma Yeni
Rahma Yeni 2012-8-7
Hello,, ^^ How to make history like in Photoshop..?? So, we can move to previous step,. I want to apply it to an image in axes.. In fine, i want to make really like history in Photoshop.. Thank You before..

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回答（1 个）

Walter Roberson
Walter Roberson 2012-8-7
There is no built-in method for this. You need to program it yourself, including recording all relevant variables so that you can change the "current" values to be what they used to be.
  2 个评论
Rahma Yeni
Rahma Yeni 2012-8-8
I use axes to display the images that I use. so, when a process the image, then the change will re-appear on the axes. where should I store the images that I have though temporaryly..?? and how can I display it again in a images..?? I've tried to save it, but it is stored in an array, and array values can not be restored to the image. Thank You.. :)
Walter Roberson
Walter Roberson 2012-8-8
Save them anywhere you like. http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F
this_image = findobj(gca, 'type', 'image');
this_image_props = get(this_image, {'AlphaData', 'AlphaDataMapping', 'CData', 'CDataMapping', 'Xdata', 'YData'});
this_figure_cmap = get(ancestor(this_image, 'figure'), 'colormap');
Now save this_image_props and this_figure_cmap: between the two of them, they have the information needed to recreate the image.
To re-activate, presuming that there is an existing image to restore over top of:
this_image = findobj(gca, 'type', 'image');
set(this_image, this_image_props);
set( ancestor(this_image, 'figure'), 'Colormap', this_figure_cmap);

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