[STATSGRASS] CRS(): PROJ4 argument-value pairs must begin with +

rsadler at cyllene.uwa.edu.au rsadler at cyllene.uwa.edu.au
Wed Sep 28 01:50:55 EDT 2005


Hi,

I have just installed grass6.0 on a new machine, and come up with a new
error (for me!).


 test5x<-readCELL6sp("test.product5")
Error in CRS(system("g.proj -j -f", intern = TRUE)) :
        PROJ4 argument-value pairs must begin with +: XY location
(unprojected)

It looks like the CRS function in readCELL6sp is not liking the projection
information (or lack thereof), hence can't provide a projection when
reading in ascii.grid format.  When I exclude P4<-CRS(...) and just use
CRS(as.char(NA)) my later functions that process the coverage bug out.

What do I do from here?

The raster coverage has worked on a previous machine using readCELL6sp.

The coverage does have nodata values amongst other integer category values

Regards
rohan sadler


system("g.proj -j")
XY location (unprojected)

r.info map=test.product5
 +----------------------------------------------------------------------------+
 | Layer:    test.product5                  Date: Wed Sep 28 11:48:57 2005
   |
 | Mapset:   rsadler                        Login of Creator: rsadler     
   |
 | Location: bananabrains                                                 
   |
 | DataBase: /home/rohan/simulations                                      
   |
 | Title:     ( test.product5 )                                           
   |
 |----------------------------------------------------------------------------|
 |                                                                        
   |
 |   Type of Map:  cell                Number of Categories: 393          
   |
 |   Data Type:    CELL                                                   
   |
 |   Rows:         250                                                    
   |
 |   Columns:      250                                                    
   |
 |   Total Cells:  62500                                                  
   |
 |        Projection: x,y (zone 0)                                        
   |
 |            N:          1    S:          0   Res: 0.004                 
   |
 |            E:          1    W:          0   Res: 0.004                 
   |
 |   Range of data:    min =  1 max = 393                                 
   |
 |                                                                        
   |
 |   Data Source:                                                         
   |
 |                                                                        
   |
 |                                                                        
   |
 |                                                                        
   |
 |   Data Description:                                                    
   |
 |    generated by r.mapcalc                                              
   |
 |                                                                        
   |
 |   Comments:                                                            
   |
 |    test51 * test52                                                     
   |
 |                                                                        
   |
 +----------------------------------------------------------------------------+

Regards
Rohan




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