[gdal-dev] Need some help understanding why this raster is so big

Michael Sumner mdsumner at gmail.com
Fri Mar 13 05:55:43 PDT 2020


What is the source (and target) projection and extent? Some projections
have expansive limits, but you can specify the target extent with -te

HTH

On Fri., 13 Mar. 2020, 23:43 Brian, <mulcahy.brianp at gmail.com> wrote:

> Is it faster to do a gdal_warp with compression then without? Is it safe
> to assume the drive write speed would be the limiting factor for speed in
> this case?
>
> On Fri, Mar 13, 2020 at 8:33 AM CainĂ£ K. Campos <rupestre.campos at gmail.com>
> wrote:
>
>> Hello Brian,
>>
>> Try to add the switch   -co "COMPRESS=LZW" to the command line to
>> generate a compressed result with lossless compression.
>>
>> On Fri, Mar 13, 2020 at 9:07 AM Brian <mulcahy.brianp at gmail.com> wrote:
>>
>>> So compressed this raster is fairly small about 120mb but running
>>> gdal_warp produces a raster that is about 416 gb, is this something this
>>> list can help with? If so I can upload the file somewhere and let you
>>> guys/gals take a look at it.
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>>> gdal-dev mailing list
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>>
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