[GRASS5] [bug #1388] (grass) various v.extract bugs

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this bug's URL: http://intevation.de/rt/webrt?serial_num=1388
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Subject: various v.extract bugs

Platform: GNU/Linux/i386
grass obtained from: CVS
grass binary for platform: Compiled from Sources

Hi,

today I found a bug in v.extract: It does not extract the correct vectors.

Eg.: I want to extract category "PS" into a new map.
v.report markveggy.vegtype ty=area  | grep PS
Processing area   396
|329|PS                                   
|387|PS  

TEST 1: extract by category names:
v.extract -n markveggy.vegtype output=markveggy.1 type=area new=0 list="PS"
v.report -h markveggy.1 ty=area
[...]
|#|description                                                                
|0|no data                                                                    

==> Oops.No result.

TEST 2: extract by category value
v.extract markveggy.vegtype output=markveggy.1 type=area new=0 list=329,387 
v.report -h markveggy.1 ty=area
[...]
|  0|no data    
|387|PS      

==> Oops.Partially wrong.


Second example: Another category name which appear several times:
v.report markveggy.vegtype ty=area  | grep Wi
Processing area   396
|  2|Wiii                                                                     
|  3|Wiii                                                                     
|  5|Wiii                                                                     
|  8|Wi-Wii-Wiii                                                              
|  9|Wiii                                                                     
| 14|Wiii                                                                     
| 21|Wiii-Wii                                                                 
| 43|Wi-Wii-Wiii                                                              
|179|Wiii                                                                     
|181|IFA-Wiii                                                                 
|193|Wii-Fi-Fvia                                                              
|210|Wi-Wii                                                                   

v.extract -n markveggy.vegtype output=markveggy.1 type=area new=0 list=Wiii
v.report -h markveggy.1 ty=area
[...]
|1|B-Aia-Mod

==> Complete nonsense...
Hint:
v.report markveggy.vegtype ty=area  | grep B-Aia-Mod
|  1|B-Aia-Mod

So it seems to take the first entry in this case.

A bugfix were great, but take this at least as warning to check the
results from v.extract.

Best,

 Markus



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