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Lots of years ago, i did some tiff file parsing my self at a binary stream/block level. I found it quite straight forward. There's of course a difference between decyphering the container (what a tiff file is at the highest level) and understanding and using all its possible data. My guess is dat a GeoTiff has some tagged fields in which coordinates can be extracted, and a larger blob where a whole png or jpg file resides. If thats the case, a high level parser is not needed. Or maybe the contained jpg and png data are without their own "header" and only raw image data. In that case an image decyphers is needed, which works without headers. That might be hard to find.

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here are my new thoughts. I examined the geotiffs i've got. They are uncomprompressed indexed images. No png or jpg. Just raw scanline data. I took a look at my own tiff parsing of ten years ago. It was some hundred lines of code, and could only read uncompressed, 4 samples per pixel images. To make it work for a few more formats it would propably tripple the coding effort. Locus could also limit the types of image data supported. There are a lot of tool which can convert to a specific tiff format. There are also tools who can put the geo stuff back in from sidecard files, if it's lost in conversion. Going forward more image types could be supported, to make it more user friendly.

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That would be great!
Recently the dutch maps are made public via a viewer:
http://pdokviewer.pdok.nl
In this viewer some wms can be shown, this one
http://geodata.nationaalgeoregister.nl/top25raster/ows?SERVICE=WMS&
Is the one with the most popular mapdata.
Maybe the coordinate system isn't supported by Mobac?

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I got it working, but because this data is already tiled at the server, and the tiles need to be resized the quality is somewhat disapointing. There is also a top10 wms, which is of a higheer quality, but has lesse geo objects.
Wouldn't it be nice if Locus supported a directory full of GeoTiff files? Then this would solve the resizing problem. Tiff files are b.t.w. not so hard to parse.

Today I indeed came across a web map service for this data. Also a full download in GeoTiff data. What would be the best approach to get this data offline? I'm trying to make things work with Mobile atlas creator, but no success yet. Do I need, beside the url, a more detailed description/parameters of the wms?
I'm a bit stuck, I guess trial and error doesn't work without some pervious experience.

From what i understand it is possible to generate a sqllite db from the kadaster maps. Somewhere here there is also a howto. Has anyone succeeded in creating such a map? I think vectormaps are the way to go, but these kadaster tile maps can be of help in some situations.

For those who are interested, I found a way to copy 'n paste formula data from GCC to a Locus waypoint. Galaxy Note 3 users can use Samsungs scrapbook (plakboek) app, which extract also textual data. From the scrapbook the coordinates can then be copied.

Guidelines shrink while rotating the map.

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At the moment I do use GCC (nice btw.), but here the user has to split the parameterized waypoint in subformulas. Also the variables are not extracted, but static, and the user must decide where to put the results of the subformulas: A lot swapping between different apps and finally Locus. Many parameterized waypoints mean many formulas and subformulas. I would like prepare the caching trip at home so, that in the field only a quick edit of a value is needed to continue the walk. Its quite hard to mobilize the children again after dad has been busy with GCC.

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I visited the GCC website and saw that more complex syntax is possible so less formulas are needed. However a tight parameterized waypoint integration within Locus would still be better . The user still has to type over the coordinates and thus app-swap a lot.

In multicaches some waypoints usually contain variables, which should be replaced by some answers. For example: N°(G*H+I).(E/G).(A-(D*C)) E°(J-H).(J/2+I).(K*B+F)
What i would like is that these waypoint can be added to the cache in that form.
After that Locus extracts the variables, and makes a nice variable list.
For each variable in this list the user can enter the value / answer,
After that Locus automatically calculates the right coordinates for the parameterized waypoints.

I know quite hard to devellop, but this would be really cool feature. In the whole android store I couldn't find such an app.

Kitkat 4.4 on a note 3, non custom rom

I realy like these themes, but they seem to crash Locus within 5 minutes of some scrolling and zooming. Hard to say what triggers it.

I think the problem is also related to SD card read/write. After my reinstall, it began to work after moving the directory from sd to phone.


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Hi Menion,

Thanks for your reply.

I did a full reinstall probably bypassing something, and now it also works as usual. My language is indeed Dutch.




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At my Note 3, this new version directly crashes with a java.util.FormatFlagsConversionMismatchException
% does not support.

I did send a report. Is there a quick workaround?


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