CM Box User GuideMain Page | About | Special pages | Log in

Printable version | Disclaimer | Privacy policy | Current revision

(Difference between revisions)

Revision as of 10:44, 25 August 2006
Peter (Talk | contribs)
(Preparation of polygons for main crop growing areas)
← Previous diff
Revision as of 10:47, 25 August 2006
Peter (Talk | contribs)
(Preparation of polygons for main crop growing areas)
Next diff →
Line 8: Line 8:
In the following example a map will be created in right format (BNA) of the millet growing area in India. In the following example a map will be created in right format (BNA) of the millet growing area in India.
 +
{|"class=prettytable" cellpadding="15" border="1" style="border-collapse:collapse" {|"class=prettytable" cellpadding="15" border="1" style="border-collapse:collapse"
Line 21: Line 22:
Far more extended software is available for digitizing maps. Even automatic digitization from bitmaps is possible. A very good freeware digitizing application called Wintopo, can be downloaded here: [http://www.softsoft.net/wintopo/dl-wintopo.htm http://www.softsoft.net/wintopo/dl-wintopo.htm] Far more extended software is available for digitizing maps. Even automatic digitization from bitmaps is possible. A very good freeware digitizing application called Wintopo, can be downloaded here: [http://www.softsoft.net/wintopo/dl-wintopo.htm http://www.softsoft.net/wintopo/dl-wintopo.htm]
 +===Gathering other information===
 +In the following example a map will be created in right format (BNA) of the millet growing area in India.

Revision as of 10:47, 25 August 2006

Preparation of polygons for main crop growing areas in the country and define cropping practices and conditions

In order to do any meaningful crop forecasting, crop conditions should be take into consideration. First of all it needs to be clear where crops are grown. The crop growing areas will be digitized for use with the CM Box software. Secondly, some characteristics on crops related to local practices will have to be recorded.

Preparation of polygons for main crop growing areas

In the following example a map will be created in right format (BNA) of the millet growing area in India.


USDA / NOAA has created a simple map that roughly denotes millet growing areas in India.
Digitizing can be done by hand, but far more convenient is to use Windisp. A vector map of India is loaded into Windisp to be displayed in the background, using the File-Open-Map function. This will facilitate digitization.
A new polygon will be digitized onto this map with the Draw-Map-Region function. The name of the boundary file will be millet.bna. Theline color and thickness is set such, that easy digitizing is accomlished.
The first millet growing area is now digitized. After all millet growing areas have been finished the boundary file millet.bna is completed.

Far more extended software is available for digitizing maps. Even automatic digitization from bitmaps is possible. A very good freeware digitizing application called Wintopo, can be downloaded here: http://www.softsoft.net/wintopo/dl-wintopo.htm

Gathering other information

In the following example a map will be created in right format (BNA) of the millet growing area in India.







Page generated in 0.309158 seconds.