Re: [udig-users] resolution lost on DRG

[Jesse Eichar <jesse.eichar@xxxxxxxxxxxxxx>]

Right now I am afraid that filter is a poor name for selection not to  
chose what to show in the map.  It could be used to filter out feature  
If you are exporting to image but unfortunately not raster data  
because it is not hooked up to raster data.

Jesse

On 30-Nov-08, at 1:08 AM, Don wrote:

> I forgot to mention that if I choose a scale to small only part of the
> DRG map is printed.  I guess that is limited by the height and width
> that I specified.  I used the same width and length as the original  
> DRG
> file.
> Don wrote:
> > 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
> >
> > _______________________________________________
> > udig-users mailing list
> > udig-users@xxxxxxxxxxxxxxxxxxxxx
> > http://lists.refractions.net/mailman/listinfo/udig-users
>
> _______________________________________________
> udig-users mailing list
> udig-users@xxxxxxxxxxxxxxxxxxxxx
> http://lists.refractions.net/mailman/listinfo/udig-users