9.1.3: Is it possible to increase the number of centroids in a data bank using modifydb?
The macro modifydb does not allow the number of centroids to be increased. To solve this problem, create a new data bank with the required number of centroids and use Module 1.31 to copy all the data (including assigned scenarios) from the smaller data bank to the larger one. See Question 5.7.3.
9.1.4: How can I reduce the dimensions of my data bank?
The dimensions of a data bank cannot be reduced. However, if a smaller data bank is needed and you would like to use the data from a larger one, create a new data bank with the desired dimensions and use Module 1.31 to copy the data from the larger data bank to the smaller one.
9.1.5: Is it possible to have more than 99 matrices in a data bank?
Since Release 9.2, the maximum number of matrices has been increased to 999.
When using an older version of EMME/2, the maximum number of matrices is 99. However, it is possible to store additional matrices in external data banks. For example, create one data bank for general work purposes (assignment, network calculation, matrix comparison, etc.) and one or more data banks containing the maximum number of matrices and only one scenario. These external data banks can be used primarily to store matrices. When needed, matrices can be copied from one data bank to the other, using Module 1.31.
9.1.6: Is it possible to verify the consistency of a data bank that is suspected as being corrupt?
Yes. First use option 6 of Module 1.11 which performs some (limited) validation tests. If no error is detected, use the E2XFBANK utility, specifying the same inhost and outhost. No transformation will be performed but the structure of the data bank will be analyzed. For more details on the E2XFBANK
