ConvertToImage failures in CPC?

cellprofiler

#1

here is some output from LSF/Cluster.

what does “Divide by Zero” mean in regards to output?

In CPCluster at 6
Analyzing set 2378
Elapsed time is 0.000577 seconds.
Analyzing set 2379
Elapsed time is 31.007823 seconds.
Analyzing set 2380
Elapsed time is 60.891479 seconds.
Warning: Divide by zero.
In ConvertToImage at 113
In CPCluster at 20
Warning: Divide by zero.
In ConvertToImage at 113
In CPCluster at 20
Analyzing set 2381
Elapsed time is 90.519824 seconds.
Warning: Divide by zero.
In ConvertToImage at 113
In CPCluster at 20
Analyzing set 2382
Elapsed time is 138.284163 seconds.
Analyzing set 2383
Elapsed time is 172.802273 seconds.


#2

When we convert objects in to images we divide by the largest numbered object to put it in grayscale levels. When no objects are identified, the largest number is zero and therefore it gives this error. It makes no difference in your output and can be ignored.

Mike