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2
votes
1answer
166 views

What methods exist for geohash of polygon?

GeoHash is an excellent method to code the latitude and longitude of a point into a string. It's concise, due to the use of numbers + letters, and the precision can be tuned adding characters at the ...
2
votes
0answers
358 views

Why does compressed & zipped/unzipped file geodatabase give Open Failed Error opening feature class Cannot access secured data?

In Arc 10.2, a colleague compressed a file geodatabase and then zipped it and sent it to my via email. I unzipped it and was unable to add any of the feature classes into my map document. I received ...
2
votes
0answers
84 views

Classify trajectory compression algorithm

I'm tryng to classify each compression algorithm based upon their features, i've thinked: Compression algorithm Lossless algorithm Batched algorithm Rinex Lossy algorithm Batched algorithm ...
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0answers
10 views

Save raster from qgis using a compression

There is a method to save raster from qgis using a compression? For exemple from "Export map" in arcgis there are many options to compress the images depending on the file type (tiff, jpg...).
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0answers
84 views

ERDAS Imagine ecw compression settings

We have some jp2 or img satellite images that we compress to .ecw using ERDAS Imagine. We have realized that with some images we are losing too much information while doing that. What i wanted to ask ...
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0answers
58 views

Raster format similar to ECW

I need an alternative to the ECW format that we currently have for a new series of Ordnance Survey maps. The ECW format looks clearer and less pixelated than the new maps in Tif format (in QGIS). ...