Author Topic: Export portions of simplified tracks for printing maps  (Read 2514 times)

mgindle

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Export portions of simplified tracks for printing maps
« on: April 18, 2010, 07:53:00 AM »
I'm making mapsets for the AZT300 that correlate to the simplified and segmented track in that is exporting out to the GPS.

I've prepped the track for loading onto the gps (simplified and segmented) and I would like to center a view on each of those segments, highlight that segment (the entire track would be seen beyond) and export each at the same scale. The result of this operation would be 20 'maps/images' at the same scale. I would also like to have the profile of each track exported and on the map that I'll be printing.

After some trial and error, the only way i've been able to get close to this type of output is to put waypoints at the ends of each segment then manually centering the map with the endpoints in view and exporting to a common high resolution image. Ideally, it seems I might find more consistency if I could save each track segment to its own track but this seems to be a very tedious and potentially inaccurate process. I was also thinking about "exporting" each segment in a track via something like excel, where I can have a tally of track points?

Correlating the profile to each segment is also creating its own problems, as the mileage always starts at zero and goes to the end of the track segment. Is there any way to get it to read as a function of overall track mileage?, or both? segment length and overall track length?


mgindle

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Re: Export portions of simplified tracks for printing maps
« Reply #1 on: April 19, 2010, 08:01:19 AM »
I made some headway on this by exporting the entire, simplified track to a *.csv file and breaking the file into 500 point files in excel. On the translation back to *.gpx however, the tracks appear to be shifted up and are pushed slightly north of the original track?

I used GPSexpert to translate from *.csv to *.gpx and don't know where the shift occured? Any advice on a more accurate way to translate that file? Or, is there any way I can open the *.csv directly in Topofusion?

ScottMorris

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Re: Export portions of simplified tracks for printing maps
« Reply #2 on: April 20, 2010, 11:14:49 PM »
Hey Matt,

There's nothing in TopoFusion to do what you are asking (as I told you in person... :).  But it wouldn't be too difficult a piece of code to write and might be a nice feature to have in the software.  

For future reference or others wondering about this, the closest thing right now is the custom map .KMZ export feature, described here:

http://topofusion.com/garmin-custom-maps.php

Basically you could zoom to cover the track and then export a series of tiled jpegs that cover the whole area.  To pull the jpegs out of the KMZ file you can just renamed file.kmz to file.zip.  Then unzip it and find each of individual jpegs there.

Now, to your second question.  I'm not sure what could be going on with the shift -- probably a datum issue.  TF doesn't read the .csv file it writes out, unfortunately.  You might try the .txf (maptech format).  It exports lat/lon instead of UTM coordinates, and is still a comma separated file, easy to open in excel.  The downside?  It doesn't have elevation info.

It sounds like what you need is a 'zoom to track' function, rather than the current 'zoom to file' function.  I'm trying to think of a way to do this without creating 20 different files, but haven't thought of anything yet.

The lap analysis tool will pan the map to show the current 'interval', but not zoom it unfortunately.  You could use this on the un-split track to have 15 mile chunks highlighted for each map.  Just set the interval to 15 miles, double click on each one and then adjust the zoom in our out to match.  Might be a good ghetto solution.

Let us know what you come up with, if anything.

Scott Morris - founder and co-author of TopoFusion
email: smorris@topofusion.com