[R] Raster comparrison

Jeff Newmiller jdnewmil at dcn.davis.CA.us
Sat May 11 09:06:11 CEST 2013


I have no idea what you should do. That is why you should always "reply all" to messages on the list, so others can chime in.
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Sent from my phone. Please excuse my brevity.

p m <stagis0 at gmail.com> wrote:

>Jeff,
>
>the information come from predictions of 2 models, and the 2 maps are
>scaling aligned. In the web I founded a fucntions called compare, but
>it's
>just evaluate if rasters have the same extent, number of rows and
>columns,
>projection, resolution, and origin (or a subset of these comparisons),
>without comparison of cell values.
>
>Do you have any suggestion for me?
>
>Paul
>
>
>2013/5/10 Jeff Newmiller <jdnewmil at dcn.davis.ca.us>
>
>> I am not a GIS expert, but I would be curious to know: Where is the
>> variance information supposed to come from? And, do you have the map
>> positions and scaling aligned already?
>>
>---------------------------------------------------------------------------
>> Jeff Newmiller                        The     .....       .....  Go
>Live...
>> DCN:<jdnewmil at dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live
>> Go...
>>                                       Live:   OO#.. Dead: OO#.. 
>Playing
>> Research Engineer (Solar/Batteries            O.O#.       #.O#.  with
>> /Software/Embedded Controllers)               .OO#.       .OO#. 
>rocks...1k
>>
>---------------------------------------------------------------------------
>> Sent from my phone. Please excuse my brevity.
>>
>> p m <stagis0 at gmail.com> wrote:
>>
>> >Dear all,
>> >
>> >I'm looking for a test to identify significant differences
>> >(p-value) between 2 raster maps.
>> >
>> >Can you suggest me a way to solve this problem?
>> >
>> >
>> >Thank you in advance.
>> >
>> >Paul
>> >
>> >       [[alternative HTML version deleted]]
>> >
>> >______________________________________________
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>> >https://stat.ethz.ch/mailman/listinfo/r-help
>> >PLEASE do read the posting guide
>> >http://www.R-project.org/posting-guide.html
>> >and provide commented, minimal, self-contained, reproducible code.
>>
>>



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