simple html5 geolocation example geotiff

Based on a geotiff file, we Need a Simple Static html Page which Displays the current gps Position in the center of the Browser. The Demo file should be usable online on any Webserver or offline on an iPhone/iPad.

Important: it Must use a Local Static geotiff file, an online Access to a Server like google Maps is not wanted!

instead of using geotiff files, i would like to have the function based on geo references in the filenames.

for example a png file is named
upper left corner E008.000,N52.000
lower right corner E009.000,N51.000
(all values are decimal, for example N008750 would be N8.45'00'')
File size should always be constant for example 500*500px

The htmlfile should simply

-check the current gps position (ask the user for html5 geolocation confirmation should pop up automatically)

-the current gps position data should be used for choosing the correct image name, which shows the map for the current position. This is the center map

-the center of the screen should represent the current position on the center map, explanation

center map image data
upper left corner E008.000,N52.000
lower right corner E009.000,N51.000

my position

center of the screen is on px 50 from left and 100 from top of the center png file (always north up)

-display all 8 png files around the current tile
around the middle tile. If any of the files do not exists with the required filename, that should be there, it should simply display white area (or if possible a error.png file with the same 500px*500px)


center map image name

left middle image name

left upper image name

middle upper image name

right upper image name

right middle image name

right lower image name

middle lower image name

left lower image name

If the position leaves the current center image, the visible area should be recalculated based on the new center map and the 8 maps around. The position should be recalculated every 5 seconds.

-The current position and the current direction should be shown as a small arrow

hope this helps, if you like you can send me a message with more questions, if required

Evner: Android, Geolokation, HMLT5, iPhone

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Om arbejdsgiveren:
( 0 bedømmelser ) Hude, Germany

Projekt ID: #932964

3 freelancere byder i gennemsnit £708 på dette job


actually have this ready.. for iphone and 5 other platforms. bid updated to contain the local images buffer

£1500 GBP på 1 dag
(6 bedømmelser)

Can help... I am an expert... please check my reviews...

£400 GBP in 7 dage
(1 bedømmelse)

please check the PMB for more details about the project.

£225 GBP in 20 dage
(0 bedømmelser)