A bitmapped image format that employs lossless data compression
0
votes
0answers
30 views
cut tiles with gdal2tiles.py from a png with world coordinate info
I have a collection of PNG files that use the standard google maps projection and have baked into the filename of each the zoom level (all of them are at 22), the x and y pixel coordinates of the ...
1
vote
1answer
53 views
Having problems creating vrt in QGIS from png files
This is similar to a question asked by someone else, re OS tiles, however, there is a difference! I am a bit of a amateur in GIS and python, but if I take it slow I can usually just about work it out!
...
5
votes
2answers
297 views
How do I use QGIS python console to iterate through simple layer queries and png outputs?
I'm really new to QGIS coding and I'm having a hard time finding (especially) the api classes/functions to carry out actions of the Query Builder window.
I'm basically trying to do this:
Iterate ...
1
vote
1answer
79 views
Is it possible to export raster data from PostGIS or MapServer as a base64 string?
Is it possible to output a PNG in a base64 string so that can be directly loaded into a browser? I've read through the PostGIS documentation which refer to the GDAL output formats. The GDAL output ...
3
votes
2answers
119 views
How should I get a Raster out of ArcMap and into Google Earth (.kmz) with transparency
RasterLayerExportClass will only create a .png with a single value transparency, however there is a bug in Google earth which prevents this from working.
The other export options don't support ...
2
votes
2answers
415 views
How to render a multi-layered (raster + vector) map to a file (PDF, SVG or JPEG, PNG)?
When using OpenLayers I can compose a map with several layers which is displayed nicely by my browser, but I need to do the same server side (no browser composing the layers), and I'm waiting a image ...
0
votes
4answers
767 views
How to plot a point on a static Google map [png]?
map&markers=color:blue%7Clabel:S%7C40.702147,-74.015794&markers=color:green%7Clabel:G%7C40.711614,-74.012318&markers=color:red%7Ccolor:red%7Clabel:C%7C40.718217,-73.998284&sensor=false
...
4
votes
1answer
278 views
Using PNG/JPEG Compression in GeoServer
Is there any use in setting the PNG and JPEG compression in GeoServer (Services - WMS - PNG Options/JPEG Options)?
The default is 25, but we heard rumours that having compression resulted in a time ...
1
vote
1answer
290 views
How to create a worldfile by bounding box?
I need to create a worldfile from Bigmap Application. I've successfully to grab a pack of PNG tiles and the pearl app mosaicking all in one. The BigMap site shows the raster bounding box and util ...
1
vote
1answer
200 views
How do I make a more Bandwidth-friendly map overlay?
I performed a map overlay in Google Earth then saved the overlay as a KMZ file. Then logged into my Google Maps account and uploaded that KMZ file so the map overlay would appear on Google Maps. The ...
2
votes
2answers
828 views
How to create dynamic map images?
I have map images of my local ward (Areas geo-referenced and drawn using QGIS and Adobe illustrator. Now these maps are in .png format (Raster images). It's not a tile linked to some mapserver such as ...
3
votes
2answers
628 views
ImageMagick's convert program changes PNG file format so that color/alpha info doesn't survive GDAL
It appears that ImageMagick's convert program changes something in my PNG file that causes GDAL processing to mess up the color and/or transparency bands.
My original PNG file gets processed ...
3
votes
1answer
559 views
Automatically georeference hundreds of png files based on polygon vector coordinates
I have 1000 polygons in my shapefile. I also have 1000 PNG files. Do you think it is possible (based on a common attribute), through a script or something, to assign each of those PNG files to a ...
6
votes
4answers
434 views
Exporting polygon features to individual image pngs
I have a shapefile with a few thousand polygons, ArcGIS [9.3] (and even PostGIS). I would like to export each of those polygons into its own thumbnail image file without any real context. What is the ...
5
votes
1answer
489 views
How to export a PostGIS raster to PNG?
I have a raster which is split into 30 tiles and I want to dump them all into PNGs.
I've read the documentation http://postgis.refractions.net/documentation/manual-svn/RT_ST_AsPNG.html but still ...
3
votes
1answer
285 views
How to make a transparent background image using r.out.png?
Can the white background of the r.out.png of GRASS be changed to transparent?
2
votes
1answer
433 views
Convert SqlGeometry data from SQL directly to Tiles / PNG file
I would like to know a basic method for 'exporting' SqlGeometry data from SQL Server 2008 to a Tile Server / PNG File generator. I already have a Silverlight Map application which uses a Custom Tile ...
4
votes
1answer
368 views
Working with PNG images in Photoshop
I have a couple of .png images, they represent relief shadows, only black and white color
In ArcCatalog Preview or in ArcMap, I see that image in example, but I when I open it in Adobe Photoshop, ...
0
votes
1answer
297 views
How to convert .ps to .png in a ps.map script?
I already managed to create a .ps file. How do I convert it to .png using a GRASS script?
4
votes
5answers
456 views
How to save a raster and vector into a single PNG file in GRASS?
I am trying to save a raster and vector into a PNG file. The vector is overlayed on top of the raster map. I was only able to save the raster file into a png using r.out.png but without the vector.
1
vote
3answers
272 views
d.out.file is not working
I'm trying to use 'd.out.file' to save the displayed map to a PNG file. It failed and produced this message: "Command 'd.out.file' not yet implemented in the GUI. Try adding it as a command layer ...
0
votes
1answer
178 views
How to export a png file from a raster file? r.out.png has an error
I used r.out.png to export a png file, but it produced this error:
(Sun Feb 27 00:26:32 2011)
r.out.png input=raster_bulacanElevation ...
3
votes
1answer
405 views
Is there a way of cutting a raster map that is displayed in the GRASS GIS Map Display?
I have a raster map that I generated from cropping/masking from a bigger raster map. It produced a map with only a portion of not null values. I only want to have a map that is zoomed in to the ...
