[mkgmap-dev] DEM contrast option?

Thu Jul 5 19:20:44 BST 2018

You should only use one single resolution

On Thu, 5 Jul 2018, 19:31 jan meisters, <jan_m23 at gmx.net> wrote:

> Tried a lot of dem-dist variations: fixed resolution as you hinted,
> decreasing and even inverted steps.
> Unfortunately nothing changed the shown behavior.
>
> What I´d like to see is the same CONTRAST in the shading over all
> resolutions.
> In higher resolutions the darks of the DEM are clearly brighter, whatever
> dem-dists used.
> With the blank screenshots I wanted to show that there is no additional
> (higher resolution) polygon in my style eventually hiding the DEM.
>
> Had some success (at least on DEM contrasts) mixing levels and
> overview-levels, but that obviously breaks the rest of the map.
>
> Jan
>
>
> Am 04.07.2018 um 21:14 schrieb Felix Hartmann <extremecarver at gmail.com>:
>
> if you have several dem resolution levels in mkgmap - then it will lose in
> detail (in order to zoom in/out faster). You could just create the map is a
> single dem resolution - then detail level is always the same.
>
> On 4 July 2018 at 18:52, jan meisters <jan_m23 at gmx.net> wrote:
>
>> I just made my first map with the new DEM-option and I´m impressed.
>> Pretty easy.
>> But I wonder why DEM shading looses contrast in higher resolutions in
>> BaseCamp:
>>
>> <1DEM_low.jpg><2DEM_higk.jpg>
>>
>> My Style has background poly 4a and 4b (both transparent), however they
>> are not mentioned in polygons. I wouldn´t know how to tag them anyway.
>> And even with a completely blanked typ-file the difference is visible:
>>
>> <3DEM_low-e.jpg><4DEM_high-e.jpg>
>>
>> HGT´s are 3“ data from viewfinderpanaramas.org
>>
>> To keep the contrasted DEM up to higher resolutions/zooms I played with
>> all DEM-options from help, and also with transparencies, but that had no
>> effect - the softer shading remains.
>>
>> I see the switch in Basecamp somewhere between assumed resolutions 20 and
>> 22.
>> How is this switch defined? Is there a value to adjust this?
>>
>> Jan
>>
>>
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>>
>
>
>
> --
> Felix Hartman - Openmtbmap.org <http://openmtbmap.org> & VeloMap.org
> <http://velomap.org>
> Schusterbergweg 32/8
> 6020 Innsbruck
> Austria - Österreich
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