[Gvsig_english] Gvsig Bug - Distance measurement tool: periodical function?

[sergioayl]

Hi. I had a similar problem and it apparently had to do with the CRS which
in my case was not a projected one. Check this out only to discard possible
solutions.
Regards,
Sergio (Uruguay)


2013/8/1 Gilles Delaunay <delaunay at belziger-industriepartner.de>

> Dear users/developers of Gvsig,
>
> I could not find a "submit bug" tracker in the Gvsig community, so I
> assume this list is the right place to discuss a strange "feature" of
> Gvsig which could be a bug.
>
> My problem: the "measure distance tool" of gvsig behaves strangely, it
> is unusable. It goes up and down as I increase the distance I want to
> measure with the mouse.
> For example: I click an "origin" point on the map, move a bit: the
> distance shown at the bottom right of the GUI increases quickly. I move
> further: it goes down. I move further: it goes up again, like a
> periodical function. The function also seems to be periodical when I
> change the angle of the distance measured (move the mouse without
> changing the distance to the origin). I could not find any rationality
> in the function: just ups and downs.
> The function "measure area" from the GUI has the same problem (I guess
> the "area" function uses the "distance" function). The functions "Area"
> and "Perimeter" of the "Expression calculator" in the Table view have
> the same problem. I assume they use the same (bad) functions.
> NavTable shows the RIGHT values. The Buffer function of the SEXTANTE
> plugin works correctly: I assume those plugins use their own (good)
> distance and area functions.
>
> I use Windows 7 Pro 32bit.
> I have several versions of gvsig installed on my system, from 1.10 to
> 2.0., including CE and OADE. They all have the same problem (with many
> many more problems and bugs for 2.0, but this is another story). I have
> several versions of Java installed on my system: 1.7.0_25 and 1.6.0_26.
> I tested both (disabled one of them in the Java control panel): it did
> not solve the problem. I tested several coordinate systems: it did not
> solve the problem.
> I could not find any trace of a similar bug on the internet: am I the
> only one in the world with that problem?
>
> Your suggestions?
> Do not hesitate to answer in spanish: I can read it, but my spanish is
> not so good that I can describe a bug "en castellano".
>
> Thanks
>
> Gilles Delaunay
> from Berlin
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