Intervisibility target height

[zoran-cuckovic]

Version 0.6.1 (experimental) is producing unrealistic output from the Intervisibilty algo. Target height is sometimes much greater than the one specified in parameters. The routine is, in fact, adding the height of target's pixel to the outcome. The analysis is not incorrect (there should be no false positives).

The line :

    tgs[id2]["depth"]= depth + z_targ #z_targ if depth >= 0 else depth + z_targ

should be tgs[id2]["depth"]= z_targ if depth >= 0 else depth + z_targ

[zoran-cuckovic]

Fixed in 0.6.2 version