I am having trouble with creating categories for a raster map (floating point).
I used r.reclass to create a category for my raster (temperature values; floating point). I thought I successfully added categories but when I ran r.report there are no categories; however, when I run r.info for the raster it shows that I have two categories.
Can anyone give me a hand with this problem? The results of the r.report and r.info are below:
Maybe your region computation area needs set to the extent of the
data? It looks like it is only one cell with south and west being 0,
and north and east being 1.
Mark
On Fri, Aug 27, 2010 at 12:11 PM, Andrew Lewin
<andrew.lewin@sympatico.ca> wrote:
Hi Everyone,
I am having trouble with creating categories for a raster map (floating
point).
I used r.reclass to create a category for my raster (temperature values;
floating point). I thought I successfully added categories but when I ran
r.report there are no categories; however, when I run r.info for the raster
it shows that I have two categories.
Can anyone give me a hand with this problem? The results of the r.report
and r.info are below:
r.report:
GRASS 6.4.0RC6 (MacrophytesGIS):~/grass/MacrophytesGIS/PERMANENT > r.report
mynatemp4reclass
100%
+-----------------------------------------------------------------------------+
| RASTER MAP CATEGORY REPORT
|
|LOCATION: MacrophytesGIS Fri Aug 27 12:00:05
2010|
|-----------------------------------------------------------------------------|
| north: 1N east: 1E
|
|REGION south: 0 west: 0
|
| res: 1 res: 1
|
|-----------------------------------------------------------------------------|
|MASK:none
|
|-----------------------------------------------------------------------------|
|MAP: Reclass of mynatemp4 in PERMANENT (mynatemp4reclass in PERMANENT)
|
|-----------------------------------------------------------------------------|
| Category Information
|
|#|description
|
|-----------------------------------------------------------------------------|
|*|no data
|
+-----------------------------------------------------------------------------+
r.info:
GRASS 6.4.0RC6 (MacrophytesGIS):~/grass/MacrophytesGIS/PERMANENT > r.info
mynatemp4reclass
+----------------------------------------------------------------------------+
| Layer: mynatemp4reclass Date: Thu Aug 26 15:25:18 2010
|
| Mapset: PERMANENT Login of Creator: andrewlewin
|
| Location: MacrophytesGIS
|
| DataBase: /Users/andrewlewin/grass
|
| Title: Reclass of mynatemp4 in PERMANENT ( mynatemp4reclass )
|
| Timestamp: none
|
|----------------------------------------------------------------------------|
|
|
| Type of Map: reclass Number of Categories: 2
|
| Data Type: CELL
|
| Rows: 251
|
| Columns: 434
|
| Total Cells: 108934
|
| Projection: Latitude-Longitude
|
| N: 82:39:08.872N S: 14:28:55.128N Res: 0:16:17.744
|
| E: 52:28:47.899422W W: 170:21:08.795422W Res: 0:16:17.744
|
| Range of data: min = 1 max = 2
|
|
|
| Data Source:
|
| Reclassified map based on:
|
| Map [mynatemp4] in mapset [PERMANENT]
|
|
|
| Data Description:
|
| generated by r.reclass
|
|
|
|
|
|----------------------------------------------------------------------------|
| Reclassification of [mynatemp4] in mapset [PERMANENT]
|
|
|
| Category Original categories
|
|
|
| 1 -20--1
|
| 2 0-29
|
+----------------------------------------------------------------------------+
Cheers,
Andrew
Andrew Lewin
andrew.lewin@sympatico.ca
Founder of Oceans and Coasts Blog
President
Coastal/Marine Spatial Ecologist
Spatial-Conserve Incorporated
Associate
C-FOAM (Canadian Fisheries, Oceans and Aquaculture Management Group)
Telfer School of Management, University of Ottawa
That worked! Thanks! It’s always the simplest things. I’m new to GRASS but not to GIS. I just need to gain some experience tinkering around with the software. This list helps with the small things.
Associate C-FOAM (Canadian Fisheries, Oceans and Aquaculture Management Group)
Telfer School of Management, University of Ottawa
On 2010-08-27, at 12:19 PM, Mark Seibel wrote:
Maybe your region computation area needs set to the extent of the
data? It looks like it is only one cell with south and west being 0,
and north and east being 1.