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Re: [udig-users] resolution lost on DRG
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I am able to increase the resolution by decreasing the scale. It also
decreases the size of my font so that is not visible in some cases. I
am wondering if there is some formula that I could apply given the
raster size and scale to choose the right scale.
Image Width: 5589 Image Length: 6932
Resolution: 250, 250 pixels/inch
Is there a way to use one layers extents to "filter out" another layers
data that is outside that extent?
I am getting points plotted outside the extent of the DRG topo map.
I see a field for a filter but I have found no documentation on it.
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.
>> _______________________________________________
>> udig-users mailing list
>> udig-users@xxxxxxxxxxxxxxxxxxxxx
>> http://lists.refractions.net/mailman/listinfo/udig-users
>>
>>
>
>
