Re: [GRASS-dev] GRASS_COMPRESSOR=BZIP2 in winGRASS

2016-09-20 Thread Helmut Kudrnovsky 
>> r.in.gdal and GRASS_COMPRESSOR=BZIP2 and GRASS_INT_ZLIB=9
>
>Note that GRASS_INT_ZLIB affects only ZLIB compression. 

copy/paste error; should be added to the sentence before:

GRASS_COMPRESSOR=ZLIB and GRASS_INT_ZLIB=9

>If you want to save a lot of disk space, you can convert FCELL maps to
>CELL maps, e.g. for temperature values rounding to Celsius * 10, then
>check again which compressor best fits your needs. In previous tests I
>found that BZIP2 only gives me a disk space advantage for large maps
>with >1 columns. Also, it seems that BZIP2 might compress integer
>maps better than fp maps. 

will try to convert and test size.

thanks.





-
best regards
Helmut
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Re: [GRASS-dev] GRASS_COMPRESSOR=BZIP2 in winGRASS

2016-09-19 Thread Martin Landa 
Hi,

2016-09-19 16:14 GMT+02:00 Helmut Kudrnovsky :
> r.compress -p map=checkcompression@checkbzip2
>  is compressed (method 4: BZIP2). Data type: FCELL
> ---
>
> thanks for activating BZIP2 compression.

OK, I activated BZIP2 compression also in relbr72 (r69534). Could you
please test it also with the next build of GRASS 7.2? Thanks, Martin

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Re: [GRASS-dev] GRASS_COMPRESSOR=BZIP2 in winGRASS

2016-09-18 Thread Martin Landa 
Hi,

2016-09-18 20:04 GMT+02:00 Markus Neteler :
>> "GRASS needs to be compiled with BZIP2 for BZIP2 compression"
>> ?
>
> I checked
> https://wingrass.fsv.cvut.cz/grass73/x86_64/logs/log-r69510-8/
>   BZIP2 support:  no
>
> That's why it is at time not included in winGRASS...

bzlib2 support activated in trunk (r69517). Let's check the next
WinGRASS build. Martin

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Re: [GRASS-dev] GRASS_COMPRESSOR=BZIP2 in winGRASS

2016-09-18 Thread Markus Neteler 
On Sun, Sep 18, 2016 at 7:53 PM, Markus Neteler  wrote:
> On Sun, Sep 18, 2016 at 7:41 PM, Helmut Kudrnovsky  wrote:
>> Hi,
>>
>> experimentally I've tried set GRASS_COMPRESSOR=BZIP2 in today's
>> OSGeo4W-wingrass7.3 (trunk).
>>
>> By writing a raster map, I got the message, that BZIP2 grass compresser
>> isn't implemented in this grass version.
>
> What is the exact error message? This one:
>
> "GRASS needs to be compiled with BZIP2 for BZIP2 compression"
> ?

I checked
https://wingrass.fsv.cvut.cz/grass73/x86_64/logs/log-r69510-8/
  BZIP2 support:  no

That's why it is at time not included in winGRASS...

Markus
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Re: [GRASS-dev] GRASS_COMPRESSOR=BZIP2 in winGRASS

2016-09-18 Thread Markus Neteler 
On Sun, Sep 18, 2016 at 7:41 PM, Helmut Kudrnovsky  wrote:
> Hi,
>
> experimentally I've tried set GRASS_COMPRESSOR=BZIP2 in today's
> OSGeo4W-wingrass7.3 (trunk).
>
> By writing a raster map, I got the message, that BZIP2 grass compresser
> isn't implemented in this grass version.

What is the exact error message? This one:

"GRASS needs to be compiled with BZIP2 for BZIP2 compression"
?

Markus
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