[GRASS-user] Scalebar for lon/lat projection in ps.map

[maning sambale]

On 7/19/08, Hamish <hamish_b at yahoo.com> wrote:
> maning sambale wrote:
>> I am preparing a country-wide map using ps.map.  The region spans 2-3
>> UTM zones although most of the region is covered by one zone but I
>> still need the data at the fringes covered in another zone.
>>  In order to do that I used a lon/lat projection.  However, ps.map
>> will not produce a scalebar for lon/lat projection for good reasons.
>>
>> I know this isn't good practice.  Any Ideas how I can
>> produce a "scalebar" for lon/lat?
>
> my advice is: don't. overlay a grid or geogrid instead. with at least
> two grid lines for both lat + long the reader can see the scale.
Thanks!

>
> you can reproject everything into the central UTM zone, but the outside
> parts may start to be distorted. if only going +/- 1 zone you may get away
> with it.
I followed this advice and used a central UTM zone.
> Hamish
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