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FB3Group BKB |
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| MainUser InterfaceFile MenuExport... |
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Export...
Export Dialog Window
This dialog window is used to set options and target before
exporting the current graph in the image file formats GIF, TIFF
or PNG.
In order to use the export feature, it is necessary to have an open
uDraw(Graph)
base window
which must not be covered by other windows.
When using the export, uDraw(Graph) tries to raise the base window to
bring it in front of all other windows (on Windows® platforms this
might fail due to restrictions of the operating system).
The export does not work when the base window is
iconified
or when uDraw(Graph) operates in the background without a user interface
directly after starting the system with commandline option
-nogui.
Make sure that the base window is visible in the front if you experience
any problems with export.
Dialog Elements of the Export Window
-
Area
Specifies which portion of the graph has to be saved, either the
exact part that is currently visible in the
base window
where this dialog has been invoked or the whole graph.
Be careful that saving the whole graph may take some time and
may create huge files, especially for very large graphs.
When saving the whole graph, uDraw(Graph) automatically scrolls to
each area.
Please do not use the user interface until the end of the saving
operation which is displayed in the status line of the base window.
-
Format
Specifies the image format of the export file, either GIF, TIFF
(uncompressed) or PNG.
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File Name
The name of the image file has to be specified here.
A reasonable name is given by default.
File Names without a leading path are stored in the directory
where uDraw(Graph) was started.
Either type the file name directly into this field or use the
file browser for more convenience by pressing the browse button.
The file browser is similar to the one used to
save a graph.
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Save
Push button to save the graph in the file specified in field "File Name".
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Cancel
Push button to close the export dialog without performing any action.
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Help
Push button to start the
online help system
with this page.
Instead of LZW compression, the run-length encoding of
Hutchison Avenue Software Corporation is used, also known as
miGIF compression.
The miGIF compression routines do not, strictly speaking, generate
files conforming to the GIF spec, since the image data is not
LZW-compressed (this is the point: in order to avoid transgression
of the Unisys patent on the LZW algorithm.)
However, miGIF generates data streams that any reasonably sane
LZW decompresser will decompress to what we want.
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