Dear Keplerites, I believe I have stumbled across a bug in the RExpression actor. I am using the 1.0.x developer version from svn in Windows XP (x86).
The attached workflow should demonstrate two bugs. 1. Matrices get scrambled by RExpression. The "Make a Matrix" actor is a simple python script that creates an nrow x ncol matrix where M[i,j] = i+j (with subscripts starting at 0). The result is displayed properly by MatrixViewer and MatrixViewer2. However, the matrix is scrambled inside R (see Display and ImageJ). It looks like the row and column subscripting is reversed. 2. The workflow executes the first time the run button is pressed, but produces a type error the second time it is pressed. Reloading the workflow solves the problem (for one run iteration). With regards, Tom p.s. There is also a serious performance issue. Try changing the nrow and ncol constants from their current values of 5 and 10 to something like 100 and 200. Even with the extra conversions from binary to text and back, it takes way too long. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mercury.nceas.ucsb.edu/kepler/pipermail/kepler-users/attachments/20091203/4f1cca43/attachment-0001.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: RExpression_Matrix_IO_Test_V2.xml Type: text/xml Size: 46092 bytes Desc: not available URL: <http://mercury.nceas.ucsb.edu/kepler/pipermail/kepler-users/attachments/20091203/4f1cca43/attachment-0001.xml>
