Hi Andrei,
I tried the Geostaf graticule plug in and the Pirol Grid toolbox, but they only create projection (X,Y coordinates) grids. I wanted an extension that could create geographic grids (latitude, longitude) in Open Jump.
To achieve what you want to do, you need a coordinate transformation tool to transform a rectangular grid representing meridian and parallels into a geographic grid drawn in the same projected coordinate system as your data.
I don't know the coordinate system of your data, but as an example,
here is a geographic grid (latitude longitude) in a geographic coordinate system (create by hand in OpenJUMP and representing 5° x 5°)


And here is the same grid transformed into Lambert93 (the projected CRS used in France)


To have nice curves, you may need to densify the original grid

To make the transformation, you may use OpenJUMP CTS plugin, or any transformation tool like cs2cs tool from ogr library (based on proj4)...

Hope that helps,

Michaël




Thanks for the links and support.

Andrei

From: Michaël Michaud <michael.mich...@free.fr>
To: Andrei Nacu <andreina...@yahoo.com>; OpenJump develop and use <jump-pilot-devel@lists.sourceforge.net>
Sent: Friday, April 6, 2012 6:33 PM
Subject: Re: [JPP-Devel] Geographic grid plug in

Hi Andrei,

Currently, there is no plugin in OpenJUMP core to do that,
and it's a long time missing feature.
Here is two discussions where you'll find several workaround
through
- Geostaf Graticule Creator plugin
- Sextante extension (vector layer > create graticule) or
- with a small script (attached to one of the mails).

http://groups.google.com/group/openjump-users/browse_thread/thread/cd1b8f99212e03a5/363336cc691c4b65?lnk=gst&q=grid#363336cc691c4b65
http://groups.google.com/group/openjump-users/browse_thread/thread/92953b3ff6bd6605#

I will increase the priority of this feature request so that we'll
get it in OpenJUMP 1.6,

Michaël

Greetings,

I would like to know if there is an Open Jump Extension available that can create geographic grids for the datasets in the map view?

If there isn't, than such a tool would be a valuable addition to Open Jump.

Thank you,
Andrei


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