[mkgmap-dev] a new DEM-File Option

Fri Nov 3 17:36:45 GMT 2017

Hi Frank

I wonder if you could help me with the following points which relate to 
DEM on a gps.

1) One of the problems of DEM on a gps is  the intensity of darkness 
which you get near steep hills.

It looks terrific in Basecamp but I prefer it to be lighter.

I have experimented with higher values of dlon , i e dlon=.01 - this 
does seem to decrease the contrast but instead ofcourse it tends to 
spread a grey

veil over the whole map.

Is there another option I could use ?

2) Related to this ; its great to be able to create different zoom 
levels , however

I have not been able to  do the following:

level 1 - no dem  level 2 dem

This would result in a more Basecamp style zoom, where the dem 
disappears when you zoom in.

I tried --dlon=0 --dlon=0.0027 etc but setting it to 0 causes an error

Would this be at all possible?

Thanks in advance

r

Nick

On 02/11/2017 21:27, lig fietser wrote:
>
> I'm afraid I don't understand your tools Frank.
>
> I guess I will wait until mkgmap has included the DEM handling.
>
>
> ------------------------------------------------------------------------
> *Van:* mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> namens 
> Frank Stinner <Frank.Stinner at kabelmail.de>
> *Verzonden:* donderdag 2 november 2017 11:57:06
> *Aan:* mkgmap-dev at lists.mkgmap.org.uk
> *Onderwerp:* Re: [mkgmap-dev] a new DEM-File Option
> Hi,
>
> i don't now your build-process. But i have installed your original map 
> (without the DEM's). After you include the DEM's in this IMG files, 
> create with
> gmtool with this NEW IMG's a new TDB.
>
> For the old TDB you get with
>
>     gmtool -i 10010000.tdb -I 2
>
> the following output:
>
> Datei 'd:\tmp\OpenFietsMap\10010000.tdb'
> 21729 Bytes (21,2 kB, 0,0 MB), letzter Schreibzugriff 28.10.2017 01:43:28
>    TDBVersion:          407
>    CodePage:            1252 (0x000004E4)
>    Family-ID:           10010 (0x271A)
>    Product-ID:          1 (0x0001)
>    ProductVersion:      1710 (0x06AE)
>    FamilyName:          OpenFietsMap (BNL)
>    SeriesName:          OpenFietsMap (Benelux_v28-10-2017)
>    Routingfähig:        1 (0x01)
>    größter Routing-Typ: 24 (0x18)
>    mit Contourlinien:   1 (0x01)
>    DEM:                 0 (0x00)
>    niedrigster MapLevel:18 (0x12)
>    Beschreibung:        Test preview map
> ....
>    Unknown29:           10000 (0x00002710)
>    Copyright:           [CopyrightInformation, 
> ProductInformationAndPrinting]
>                         Map created with mkgmap-r3908
>                         [CopyrightInformation, 
> ProductInformationAndPrinting]
>                         PROGRAM LICENCED UNDER GPL V2
>                         [CopyrightInformation, 
> ProductInformationAndPrinting]
>                         MAP DATA © OPENSTREETMAP.ORG, MAP LAYOUT © 
> OPENFIETSMAP.NL, SRTM DATA © U.S. GEOLOGICAL SURVEY
>                         [CopyrightInformation, 
> ProductInformationAndPrinting]
>                         OPENSTREETMAP.ORG CONTRIBUTORS|SEE: 
> HTTP://WIKI.OPENSTREETMAP.ORG/INDEX.PHP/ATTRIBUTION
>    Overviewmap:
>      Kartenummer:       10010000 (0x0098BD90)
>      übergeordnet:      0 (0x00000000)
>      Beschreibung:      OFM_BNL(28-10-2017)
>      Anzeigebereich:    Lon 2,373047°..7,382920°, Lat 
> 49,350586°..55,264900°
>    Detailkarten:        145
>      Kartenummer:       10010001 (0x0098BD91)
>        übergeordnet:    10010000 (0x0098BD90)
>        Beschreibung:    BE-Ieper (10010001)
>        Anzeigebereich:  Lon 2,373047°..2,900391°, Lat 
> 50,668945°..50,888672°
>        Dateien:         10010001.TRE (38603 Byte), 10010001.RGN 
> (3909498 Byte), 10010001.LBL (175026 Byte), 10010001.NET (428039 
> Byte), 10010001.NOD
> (714739 Byte)
> ....
>
> The main-part is a long list of all mapnumbers/files with the 
> subfiles. It is necessary to rebuild this list with the DEM-files with 
> their filesize.
> That's why use the NEW IMG's for this.
>
> Frank
>
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