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Colors

The Wahoo Bolt2 and the Roam2 show 64 color (43) on the display. When using Hex color only following values are used:

Hex Value
00
55
AA
FF

On Cruiser this results in pretty screaming color, but on the reflective display they are quite nice.

Be aware that the lightest gray is #AAAAAA. Make sure to create a suitable contrast!

html presentation of avalable color

Symbols

To adjust the size of symbols they can be scaled like this:

<symbol src="icons/train_station.svg" symbol-percent="130"/>

So that POI symbols do not cover too much map material in the overview, you can also use different symbols for different zoom levels.

<m v="supermarket">
  <m zoom-min="14">
    <symbol src="icons/supermarket_small.svg" symbol-percent="50"/>
  </m>
  <m zoom-min="15">
    <symbol src="icons/supermarket.svg"/>
  </m>
  <m zoom-min="16">
    <caption cat="bolt2" fill="#FF0000" k="name" 
     font-family="condensed" font-style="bold" priority="6" size="14" 
     stroke="#ffffff" stroke-width="3.0" dy="-16"/>
  </m>
</m>

zoom14 zoom15 zoom16

Railway presentation

Apart from the dashed lines there is the possibility of adding stipple strokes like this:

<line cap="butt" fade="12" fix="true" stipple="15" stipple-stroke="#ffffff" stipple-width="0.7" stroke="#000000" width="3" />

Custom tags

In the original vtm-elemnt.xml there are some custom tags that need to be mapped correctly. For example the tag bic_yes and bic_designated. They correspond with the mapping-file at the line: <osm-tag key='bicycle' value='bic_yes' equivalent-values='yes,public,allowed' renderable='false' />. I added another custom tag for the surface: bic_paved and bic_unpaved.

stylemenu

If you want to change the style according to your hardware, setting the defaultvalue does not work under the current bolt.apk. You have to swap cat-id to you desired value!

Artefacts of natural=nosea

When rendering my first own maps I had some artefacts of natural=nosea. Investigating this I found that the used land-polygons-split-4326 are – as stated – split. Problem here is the overlapping ares. So adding the tag mesh="true" resolves the problem. [source]

Screenshots

Authorize the Elemnt via adb like so. Then run adb exec-out screencap -p>screenshot.png

Screenrecord

According to the article by DC RAINMAKER it is quite simple to create a screencapture on the Wahoo Bolt. Create a the folder names capture on the bolt. Start recording by using the system menu on the bolt:

screenshot3