[import 3dface(DAE) fail -- two triangle]

there are more than 4000   pv 3dface in dwg.

1  impert dwg into sketchup

2 export to dae

3 import dae into pvsyst

most of the them are ok.

but some of the pv 3d face is splited to two triangle. why ? 

 

if i delete 3500 face. only export 500 faces (include the wrong faces just now) to DAE.

then  import 500 faces into pvsyst.  all of them is  ok.....。they are not splitted to 2 triangle.

 

[CAD point (x,y,z) import to PVSYT]

terrain

 

there are many CAD point (x,y,z) of the terrain.

 

how to import them to PVSYT

[CAD TO PV - Coordinate System is different]

in cad ,x is east, y is north.

in pvsty, x is west, y is south.

 

if import cad (convert to dae ) to pvsyst, all of the pv(3d face) is rotated 180 degree.

 

how should i do ?