GeoTIFF is a public domain metadata standard which allows georeferencing information to be embedded within a TIFF file.
14
votes
6answers
3k views
Should GDAL be set to produce GeoTIFF files with compression? Which algorithm should be used?
I have a folder of GIS data that consists mainly of GeoTIFF files. The whole set weighs in at about 1.2 GB. I noticed that if I pack the contents into a tarball, it smashes down to about 82 MB. I ...
3
votes
1answer
473 views
affine transformation on geotiff
I have a bunch of geotiffs stored in a PostGIS DB that i am mounting on my OpenLayers map.
They all have the geoTransform information in them. I just want to know how i can mount them on my ...
0
votes
0answers
26 views
not able to view imported .tif file in geoserver
I am using geoserver. I have imported a .tif file using postgis, which has been saved in vector type layer in geoserver. Now, whenever, I preview it, the layer gets automatically downloaded as wms ...
11
votes
2answers
575 views
GeoServer: Best way to publish 2500 TIFF or 71 ECW files?
I have ortophotos of an area that I need to serve as a background map for my vectors. I got it as 2500 files (71,5MB each) in raw TIFF format with corresponding TFW word file - 180GB of data. ...
4
votes
1answer
732 views
How to get GDAL to create statistics for GTiff in Python
I regularly create my own GeoTIFF rasters with GDAL in Python, e.g.:
from osgeo import gdal
from numpy import random
data = random.uniform(0, 10, (300, 200))
driver = gdal.GetDriverByName('GTiff')
ds ...
4
votes
1answer
400 views
Extract coordinates for series of georeferenced files in ArcGIS 10?
I have a series of 1900 spatially continuous images that are georeferenced. Each image is a tif file paired with a tfw file.
These images are easily open and shown in ArcMap 10. However, I need a way ...
13
votes
3answers
4k views
How do I change geotiff “no data” color to white/transparent rather than black?
I am preparing data for inclusion into a geonetwork node, where the maps are displayed via geoserver. The problem is that cells that have"no data" are displaying as black in the geotiff and I am would ...
8
votes
1answer
281 views
What is the correct way to convert a USGS Orthoimage from WorldImage format to tiled GeoTiff for GeoServer?
USGS provides different resolution orthoimage quadrangles in the WorldImage format (*.tif with an accompanying *.tfw world file). Some of these quadrangles can be used by GeoServer (2.1.0 - 2.1.2) by ...
6
votes
1answer
509 views
Creating a mask with transparent pixels in python
I have a geotiff image with pixel intensities ranging between certain values. Lets say bewteen -2 and 2 (the image is normalized). I have a certain threshold which interests me, lets sat 1. I would ...
5
votes
3answers
6k views
Steps to creating a GeoTIFF
First off, I'd like to mention that I'm pretty new to working with GIS, so please forgive my inexperience.
My situation is as follows: I'm tasked with georectifying a set of imagery and importing ...
4
votes
1answer
593 views
What's the best way to display a huge Aerial image using Geoserver
I have an Aerial image - Almost 1.5 GB , GEOTIFF - and i have been trying to add it as a layer in Geoserver ..
Adding the layer went successful , but the performance were very bad .
I tried to cache ...
2
votes
3answers
4k views
Batch convert GeoTIFF's to KMZ files
I have about 600 GeoTIFF map files, each about 140 mb in size that I'd like to convert to KMZ files so people can download them and use them with Garmin GPS units, Google Earth, etc.
Anyone know an ...
8
votes
3answers
573 views
Best way to manage large number of geoTiff rasters
I have around 2-3000 1-bit geoTiffs of size 11000x9400. Color 0 should be transparent, and QGis gets it wrong in the first place, so I used a .vrt file to set all the parameters in one single place.
...
5
votes
1answer
436 views
Why do TIF loaded into PostGIS lose their colormap?
I have successfully loaded a TIF image (using raster2pgsql) into my PostGIS 2.0.1 database. I can load the raster image into QGIS and it displays in the correct space. However, it has lost all colour ...
5
votes
2answers
2k views
GeoTIFF file creation from .Tiff file
im not sure if this question is suitable for GIS
I'm working on a software that displays a map, like this
![enter image description here][1]
i also have some export functions which exports the the ...
2
votes
1answer
345 views
Finding lat/lon of corners of geotiff file
I am a GIS newbie. I just recently managed to turn a GeoTIFF file into a bmp file using gdal_translate. Now I need to find the latitude/longitude coordinates of the corners. I would prefer to use ...
