[SOLVED] GIS developer for B4A

M

manuel_g

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Licensed User
(sorry for my english, it's just google translate)

I require a developer to make an app that allows drawing georeferenced polygons, that is, that the app shows a georeferenced photograph (the orthophotos already exist) and several polygons are drawn (point by point) on it. Each polygon must be saved locally in sqlite. The app must work offline.

Topological technical details are lacking for the polygon lines, but the general idea is as above. Only the logical part of the program is necessary, without visual-aesthetic design, nor user profiles, nor server synchronization.

I attach an example orthophotograph. It has a coordinate origin in WGS84. They can view it with ArcGis, QGis, Kosmos, etc.

Has anyone worked it? Anyone interested in developing it? Of course it is a job and as such is paid adequately.
 

Attachments

Look here for example...

[ABMaterial] GoogleMaps - GeoZones

ABMaterial includes the GoogleMap object (class - API exposure) to allow us to do some interesting tasks. The basics are now supported but I am sure it will expand in the future. I have implemented these basics to create a very comprehensive system. You will need your own Google Browser API key...
www.b4x.com www.b4x.com
 
Harris said:
Look here for example...
Click to expand...
The TO is searching for an B4A solution. Not sure if ABMaterial fits this requirement. Guess not.
 
??

Map_ax - offline map app

I have done this little APP with the great ScaleImageView library. ScaleImageView library was created by Andrew Graham and link is HERE. I have used also another great B4A libraries: GPS and LibGPX. Map_ax - offline map app. You can use Map_ax Android for to: - display raster maps ( jpg /...
www.b4x.com www.b4x.com
 
DonManfred said:
The TO is searching for an B4A solution. Not sure if ABMaterial fits this requirement. Guess not.
Click to expand...
The ABM app builds the geozones which are delivered to the android devices for use....
 
Hi!
Thank you all for your interest on my doubt.

I found a solution with the ScaleImageView Library:

ScaleImageView - Pan and zoom large images

My main reason to restart using B4A was to implement on a mobile device my mapping program which covers the entire UK at various scales and requires the ability to display large map images at a specified zoom level and centered on a specified coordinate and then allow the user to drag and zoom...
www.b4x.com www.b4x.com
Click to expand...
.
Actualy, the MapAX was pretty usefull, too:

Map_ax - offline map app

I have done this little APP with the great ScaleImageView library. ScaleImageView library was created by Andrew Graham and link is HERE. I have used also another great B4A libraries: GPS and LibGPX. Map_ax - offline map app. You can use Map_ax Android for to: - display raster maps ( jpg /...
www.b4x.com www.b4x.com
Click to expand...

I'm doing some tests and they go pretty good.
Thanks a lot for helping everyone
 
manuel_g said:
Hi!
Thank you all for your interest on my doubt.

I found a solution with the ScaleImageView Library: .
Actualy, the MapAX was pretty usefull, too:

I'm doing some tests and they go pretty good.
Thanks a lot for helping everyone
Click to expand...
tips:

ScaleImageView - jpg_jgw and vector maps

Fascinated with ScaleImageView I have to made this little code (w_map.zip). ScaleImageView library was created by "agraham" and link is here: https://www.b4x.com/android/forum/threads/scaleimageview-pan-and-zoom-large-images.102190/ The code is not perfect but you can see how to use...
www.b4x.com www.b4x.com
 
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