I am trying to develop a custom tool to be used as a widget in Web AppBuilder. The tool should be able to return x, y coordinate values using default projection system (e.g. London Survey Grid) based on user’s click on the map. Then the returned x, y coordinate values should generate another set of x, y coordinate of the same location using some criteria (If and else statement).
The scenario is as below:
1. User clicks on the map and returns X, Y value (default projection system)
Let’s say X = 45670 and Y = 55000
2. Re-project or convert the returned X and Y values from step 1 to another set of coordinates of the same location (P2_X, P2_Y2) using criteria below:
Criteria is: (This is just a sample, but I have a long real criteria)
If X == 0 and Y == 0:
return Projection2 (0,0)
elif X >= 44274 and X <= 45799 and Y >= 53927 and Y <= 54889:
P2_X = (X * 0.999942) – (Y * 0.2519)
P2_Y = (Y * 0.999942) + (X * 0.2519)
return Projection2(P2_X , P2_Y)
else:
P2_X = (X * 0.98888) – (Y * 0.4519)
P2_Y = (Y * 0.98888) + (X * 0.4519)
return Projection2(P2_X , P2_Y)
3. Then display both X, Y and P2_X, P2_Y
I have my python script that returns X,Y based on the user’s click on the map, but I am struggling in returning P2_X and P2_Y based on the criteria as mentioned above. I have a separate python script for the criteria. Please let me know if any one can help me on this, I can share my script if needed.
Thanks for your help in advance.
-Sushil
