[Gdal-dev] Re:Re: about grid format (write binary grid format)

elias ruiz ergio2000 at hotmail.com
Thu May 20 14:50:44 EDT 2004


ok thanks
:)

in the last version of the c program, i could write a "clone" of a real 
raster file, reading it first, and then calculating the parameters for each 
file (boundary, header, index and data). for the projection file i'd use the 
same projection parameter of the source

the "cloned" raster file ys the same, and it could use in arcgis 8.3, but 
there was a problem in the first column: the lines tha were "multiplus - 
power of 4" (sorry for my english) take a value diferent

the program has also the capability of make a null raster

to calculate the parameters (numlines, numpixels, tilexsise, tileysize, etc) 
  i'd use the data of existing raster files and make a regresion. so the 
program look first for the value stored in an array with the real values, 
then, if there was not found in it, make the regresion calculus (in most of 
the case, there are diferences of 1 to 4 pixels)

the problem that we have now is that the trial version of arcgis has expired 
and now we are making the documents to buy a licensed version.

but don't worry, when we get the licence, we will continue and will finish 
the program. also we will make a little document about the raster grid 
format

:)

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