PTV Visum - Frequently Asked Questions (FAQs)
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How to save VISUM matrices in $O or $V format with a defined number of decimal places
The number of decimal places is a direct property of the net element matrix respectively a matrix attribute.
For example you may have a look at the quick view after chosen a matrix under tab Matrices. There you can edit the number of decimal places (also possible under Lists/Matrices). This number of decimal places only effects output in ASCII/text format, binary matrix files always hold the entire accuracy of the values.