Sunny Day

Correct, I do not see these error messages with v8.0.1 (all of the above was done with v7.4.8). Thank you for your help, Michele!

Hi Michelle. Thank you for the response. Removing the Pitch column did remove the first error ("Warning: parameter Pitch did not change") but the second error ("The GCR used for the backtracking algorithm (0.675) differs from the average GCR (0.289)") remains. Below I will provide a minimum reproducible example to illustrate the error. Open _DEMO_COMMERCIAL.PRJ Click on Orientation and change to 'Tracking, horizontal axis N-S' and enable Backtracking. Click OK. Click on Near Shadings, then on Construction/Perspective. Then Create/Array of Trackers Default array of four trackers appears. Make no changes. Close Object. Click on Tools/Backtracking management. Verify that "Automatic" is checked Compute shading factor table. Click OK to exit Near Shadings. Click on Advanced Simulation, then Batch simulation. Select to vary only "Pitch E-W between trackers" Under the "Batch CSV Files" tab, select "New file" and then click OK to close the window. Open the BatchParams file, which looks like this: Modify it to schedule a batch simulation for three scenarios with varying tracker pitch: Click "Simulation" to run Inspecting the results, we see the error message is returned for cases where the tracker pitch varies from the tracker pitch in the 3D drawing in Near Shadings It seems the tracker pitch is changing each simulation but the GCR used for backtracking is not. Do you know what I'm missing?

I am attempting to run batch simulations where the pitch is varied (screenshots are attached). The tracker pitch in the shading scene is 3m. The following error is being displayed for runs where the simulated pitch differs from 3m: "Info: parameter Pitch was set, Warning: parameter Pitch did not change, The GCR used for the backtracking algorithm (0.675) differs from the average GCR (0.289)." The following error is being displayed for runs where the simulated pitch is 3m: "Warning: parameter Pitch did not change" I ran some tests in batch mode and in single simulation mode and a quick comparison indicated the results were the same i.e. the error messages returned when running in batch mode are bogus. Is anyone able to confirm that the error messages are bogus?