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The image properties are:
__modified__: "off" | {"on"}alphadata: scalar | matrix, def. 1Transparency is not yet implemented for image objects. alphadata is unused.
alphadatamapping: "direct" | {"none"} | "scaled"Transparency is not yet implemented for image objects. alphadatamapping is unused.
beingdeleted: {"off"} | "on"busyaction: "cancel" | {"queue"}buttondownfcn: string | function handle, def. [](0x0)cdata: matrix, def. 64-by-64 doublecdatamapping: {"direct"} | "scaled"children (read-only): vector of graphics handles, def. [](0x1)children is unused.
clipping: "off" | {"on"}If clipping is "on", the image is clipped in its parent axes limits.
createfcn: string | function handle, def. [](0x0)Callback function executed immediately after image has been created. Function is set by using default property on root object, e.g., set (0, "defaultimagecreatefcn", 'disp ("image created!")').
deletefcn: string | function handle, def. [](0x0)Callback function executed immediately before image is deleted.
displayname: string | cell array of strings, def. ""Text for the legend entry corresponding to this image.
handlevisibility: "callback" | "off" | {"on"}If handlevisibility is "off", the image’s handle is not visible in its parent’s "children" property.
hittest: "off" | {"on"}interruptible: "off" | {"on"}parent: graphics handleHandle of the parent graphics object.
selected: {"off"} | "on"selectionhighlight: "off" | {"on"}tag: string, def. ""A user-defined string to label the graphics object.
type (read-only): stringClass name of the graphics object. type is always "image"
uicontextmenu: graphics handle, def. [](0x0)Graphics handle of the uicontextmenu object that is currently associated to this image object.
userdata: Any Octave data, def. [](0x0)User-defined data to associate with the graphics object.
visible: "off" | {"on"}If visible is "off", the image is not rendered on screen.
xdata: two-element vector, def. [1 64]Two-element vector [xmin xmax] specifying the x coordinates of the first and last columns of the image.
Setting xdata to the empty matrix ([]) will restore the default value of [1 columns(image)].
ydata: two-element vector, def. [1 64]Two-element vector [ymin ymax] specifying the y coordinates of the first and last rows of the image.
Setting ydata to the empty matrix ([]) will restore the default value of [1 rows(image)].
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