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Best methods and software for topographic correction?
By mokukk,
What methods and software you usually use for topographic correction of high and medium resolution satellite images?
I'm asking because the topographic correction outcomes of ACTOR are not usually that excellent.
Example of GIS model that uses network Analizes in Modelbuilder or Qgis
By am2,
Hi,
I want to start to work with model builder in arcgis and Qgis.
Can some one provide me some models that uses network analizes in ArcGis ?I always learn better with seeing examples..
Thanks very much
Combining hyperspectral images
By Me262,
I am looking to "combine" several hyperspectral images I have into 1 image.
Reason being is that I want to create ROI's in order to do supervised classification. However, these training areas must be from several images. I need to basically create 1 ROI classified as "good", another ROI as "bad" and the 3rd I'l have everything else.
Not sure how to do this unless I somehow combine all images into 1. ENVI 5+ is nice and you can open all the images into 1 window, and they kind of look comb
different WGS84 implementations ?
By nadar,
WGS84 is used by most GPS, and became a de-facto standard, but it is not always easy to use:
As far as I'm informed, different versions of WGS84 datum exist.
Originally (1986 ?), the elevation reference was an ellipsoid (defined by a few mathematical parameters such as the length of 3 axes, the position of the center, etc.) . Accordingly, important differences existed between elevations read on the GPS (reference level = ellipsoid) and actual elevation (read on a topo map or seen on a coast
help me symbology
By shaimaagamal,
I am Msc student in environmental geography and master's thesis on solid waste, but I have problems in the production of maps, which symbology solid waste map such as Landfills And accumulations and containers,And factories and incinerators......How can find on this symbology Please help me and thank you in advance
example >>>http://www.vectorstock.com/composite/3074926/garbage-and-rubbish-icons-vector.jpg
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