Dear All,

I want to get DTED data (elevation) between two points (on a line).

Is there any built-in function for this purpose or I should implement it on my own?

What I want is similar to Linear Line of Sight (LLOS), but it should be on a direct line. I want to check if there is collision between two points or not.

Thank you

Sincerely

I want to get DTED data (elevation) between two points (on a line).

Is there any built-in function for this purpose or I should implement it on my own?

What I want is similar to Linear Line of Sight (LLOS), but it should be on a direct line. I want to check if there is collision between two points or not.

Thank you

Sincerely

Hi,

This might be a junk solution..given two points, you could divide the line joining source and destination points into very minute equal distanced sampling points, get the elevation at each sampling point. Then calculate slopes at every consecutive points and compare with next set of consecutive points. For example there are 3 consecutive sampling points A, B,C and say the slope or Tan theta between A and B is 60 degrees, slope between B and C is 120 degrees .. then A is not in LLOS with C. This is how Line of sight algorithm works internally.. you need to repeat this process with all sampling points and assign green and Red colors appropriately for those in LLOS and not in LLOS respectively. I had gone through Line of Sight AML in ArcInfo Workstation few years back and this is how it works internally. Hope this helps

Regards,

Pavan