[GRASS-user] r.mapcalc generates one pixel map

[Gökçen Güner]

Hello,
I'm a GIS student and in my project I need to generate vegetation indexes.
I've generated it succesfully yesterday using both python2.7 and grass gui
.I'm using WinGRASS-6.5.svn-r54428-453 on Win7. Today -I don't know why-
grass started to generate 1 pixel NDVI map. The formula is as simple as it
could be: float(b4-b3)/(b4+b3) as most of you already know. My data is not
corrupted, I'd saved original maps somewhere else and it was my first check
that whether there is a corruption. Also using QGis 1.8.1 I can generate
correct NDVI map with same data. You can check it here:

r.info map=ndvi4 at PERMANENT
+----------------------------------------------------------------------------+
| Layer: ndvi4 at PERMANENT Date: Tue Jan 01 04:06:35 2013 |
| Mapset: PERMANENT Login of Creator: murat |
| Location: newLocation |
| DataBase: D:\gis\grassWS |
| Title: ( ndvi4 ) |
| Timestamp: none |
|----------------------------------------------------------------------------|
| |
| Type of Map: raster Number of Categories: 255 |
| Data Type: FCELL |
| Rows: 1 |
| Columns: 1 |
| Total Cells: 1 |
| Projection: UTM (zone 36) |
| N: 1 S: 0 Res: 1 |
| E: 1 W: 0 Res: 1 |
| Range of data: min = nan max = nan |
| |
| Data Description: |
| generated by r.mapcalc |
| |
| Comments: |
| float(L71175034_03420050627_B40 at PERMANENT - |
| L71175034_03420050627_B30 at PERMANENT) / |
| (L71175034_03420050627_B40 at PERMANENT + |
| L71175034_03420050627_B30 at PERMANENT) |
| |
+----------------------------------------------------------------------------+
(Tue Jan 01 04:06:51 2013) Command finished (0 sec)

I uninstalled WinGRASS-6.5.svn-r54428-453  and installed
WinGRASS-7.0.svn-r54453-453, I've deleted mapset and location and the
recrated them also. I couldn't think anything else please give me some
information.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20130101/0ab2e181/attachment.html>