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From: Phil Harvey <phil@owl.phy.queensu.ca>
Subject: Re: [Tiff] Re: get tifftag_geoasciiparams string
Date: Fri, 2 Feb 2007 15:25:12 -0500
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Status:   

On 2-Feb-07, at 2:36 PM, Gennady Khokhorin wrote:
> Still can not find any reference for return from TIFFGetField(tif,  
> TIFFTAG_GEOASCIIPARAMS, &data)
> command.

Hi Gennady,

I've never used TIFFGetField(), but I expect it just returns a null- 
terminated string for ASCII tags.  (A null terminated string is just  
a character array where the length is determined by scanning for the  
first null byte.)

The content of the TIFFTAG_GEOASCIIPARAMS will be a set of strings  
accessed via the TIFFTAG_GEOKEYDIRECTORY information.  In a sample I  
have, it looks like strings may be separated by '|' symbols in the  
TIFFTAG_GEOASCIIPARAMS record, but you should check the GeoTiff  
documentation to be sure.

I hope this helps.

	- Phil


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