[GRASS-user] i.landsat.toar and zero values in GRASS 7.0.0

[Katerina-Karolina Karapanou]

I have a Landsat TM image (2007) and I work in GRASS 7.0.0. in Windows 7. 


        


                                      Once again, trying to apply the module i.landsat.toar in the right way, via GUI, I have the outcome of 7 bands under the name Btoar1, Btoar2 etc.
Also trying to check the results via r-info for all bands I realized that bands have different values and also 0 values. For example for Band1:

Type of Map:  raster               Number of Categories: 0               
 |   Data Type:    DCELL                                                      
 |   Data Units:   W/(m^2 sr um)        Vertical datum: (none)                
 |   Rows:         2434                                                       
 |   Columns:      2251                                                       
 |   Total Cells:  5478934                                                    
 |        Projection: Transverse Mercator                                    
 |            N: 4532411.19817413    S: 4459391.19817413   Res:    30         
 |            E: 441929.01667078    W: 374399.01667078   Res:    30           
 |   Range of data:    min = 39.0688188976378  max = 193                      
 |                                                                            
 |   Data Description:                                                        
 |    generated by i.landsat.toar                                            
 |                                                                            
 |   Comments:                                                                
 |     Radiance of Landsat-5 TM (method uncorrected)                          
 |    -----------------------------------------------------------------       
 |     Acquisition date (and time) ........... 2007-06-24 (-0.0000 h)         
 |     Production date ....................... 2014-05-09                     
 |                                                                            
 |     Earth-sun distance (d) ................ 0.0000000                      
 |     Sun elevation (and azimuth) ........... -0.00000 (0.00000)             
 |     Digital number (DN) range ............. 0 to 0                         
 |     Calibration constants (Lmin to Lmax) .. +0.00000 to +0.00000           
 |     DN to Radiance (gain and bias) ........ -0.00000 and +0.00000          
 |     Mean solar irradiance (ESUN) .......... -0.000                         
 |     Radiance to Reflectance (divide by) ... -0.00000                       
 |    ------------------------------------------------------------------      
 |                                                                            
 |    i.landsat.toar -r input="B" output="Btoar" metfile="C:\Users\User\Desktop\thessaloniki\2007tm\thessaloniki2007tm\LT51840322007175MOR00_M\ 
 |    TL.txt" sensor="tm5" method="uncorrected" percent=0.01 pixel=1000 rayleigh=0.0 scale=1.0         

Also for band2: min: 27.571968503937 max: 365
               band3: min: 13.4456692913386 max: 264
               band4:min:  -0.633976377952756 max:221
               band5:min: 0.231771653543307 max: 30.2
               band6:min: 8.87961417322835 max: 12.3681771653543 
               band7:min: -0.15 max: 16.5

What I can do???

Thank you
 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20150508/d73b1dfb/attachment-0001.html>