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Re: [udig-users] resolution lost on DRG
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You are correct andrea; the functionality was intended more to handle a
screen snap. If we wanted to edit a tiff file we would start to need
specific tools (not a bad idea).
The part that confuses me here is where Don is adding labels (ie human
readable) but also expecting to export the full resolution of the
original tiff file. This does not really
make sense to me.
Don perhaps you could describe what you are trying to accomplish - are
you preparing something to print out? Or are you trying to construct a
large image which you will pan around in ...
Jody
andrea antonello wrote:
Hi Don,
I have a DRG topo map. I added it as a raster layer. I then added a
postgis layer which plotted points and added labels. I then exported
the resulting map to another tiff file. When I view it and zoom in I
seem to have lost the resolution that the original tiff file had. How
do I fix this?
If you exported the map with the export enigine I think by default the
map is exported at screenshot resolution.
I think, but am not sure right now, that Jesse added also the
possibility to set the scale. If that is the case, by changing the
scale you should be able to gain higher resolution.
Andrea
Here is information on the original tiff file:
TIFFReadDirectory: Warning, O34086H1.TIF: unknown field with tag 33918
(0x847e) encountered.
TIFF Directory at offset 0xdf40 (57152)
Subfile Type: (0 = 0x0)
Image Width: 5589 Image Length: 6932
Resolution: 250, 250 pixels/inch
Bits/Sample: 8
Compression Scheme: PackBits
Photometric Interpretation: palette color (RGB from colormap)
Samples/Pixel: 1
Rows/Strip: 1
Planar Configuration: single image plane
Color Map: (present)
It is 7.5" (1/24000) topo map.
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