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Re: Exporting rasters from ArcMap 9.1 to ENVI 4.0 [message #56352 is a reply to message #56195]

Thu, 18 October 2007 08:47

Jean H.
Messages: 472
Registered: July 2006

Senior Member

Nuno Vilaï¿½a wrote:
> On Oct 16, 6:38 pm, Jean H <jghas...@DELTHIS.ucalgary.ANDTHIS.ca>
> wrote:
>> Nuno Vilaï¿½a wrote:
>>> dear all,
>>> i need to export some raster datasets from arcmap 9.1 to envi 4.0. i
>>> do this by exporting the raser datasets into a tiff format so that
>>> this can be later read by envi.
>>> when i open these tiff images in envi, there is simply a white
>>> background and no data is visible, just plain white. i tried arcmap
>>> 9.2 and the results are the same...
>>> can it be a prob with my data??? anyway, i'm just converting a raster
>>> to a tiff, no big deal... my raster is no a perfect square, but it has
>>> some "less ortodox" borders which are visible in envi, but everything
>>> inside the boarders is white, while the outside is black...
>>> anyone with the same prob or with an explanation for this???
>>> i start wondering if it is not a data prob, but my data works
>>> perfectly on arcmap...
>>> cheers!!!
>> Nuno,
>> When you export your data, make sure the data type is set properly...
>> and it should be the same when you open it in Envi (if I remember well,
>> it asks you for this type of info, the first time you open the image in
>> Envi).
>>
>> Jean- Hide quoted text -
>>
>> - Show quoted text -
>
> hello Jean!
>
> i export my masp as tiff images, and envi recognizes them as being
> tiff, but all tha data appears on white... i did another way of
> calculating those rasters just in case my method had an influence, but
> nthg works...
> and Jean, envi only asks for the coordinate system, and well even if
> don't input a correct one he'll always display the image, but not in
> this case... it's very strange and i haven't been able to solve this
> problem... do you have any idea of what it can be?
> thank you for your answer!
> cheers!
>
> nuno

Check the data type (not the format)... is your image a byte? a float
etc. Make sure that the data type you use when you export your image is
one that can be read by Envi... and make sure Envi knows it!

Jean

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[Message index]

		Exporting rasters from ArcMap 9.1 to ENVI 4.0 By: Nuno Vilaça on Tue, 16 October 2007 05:39
		Re: Exporting rasters from ArcMap 9.1 to ENVI 4.0 By: Nuno Vilaça on Fri, 19 October 2007 05:00
		Re: Exporting rasters from ArcMap 9.1 to ENVI 4.0 By: Jean H. on Thu, 18 October 2007 08:47
		Re: Exporting rasters from ArcMap 9.1 to ENVI 4.0 By: Nuno Vilaça on Tue, 23 October 2007 00:57
		Re: Exporting rasters from ArcMap 9.1 to ENVI 4.0 By: Jean H. on Tue, 23 October 2007 09:25
		Re: Exporting rasters from ArcMap 9.1 to ENVI 4.0 By: Nuno Vilaça on Fri, 26 October 2007 03:32

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