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Add support for more 64bit OP2 datablocks (GEOM4, OGPWG).New option to force readnas to combine superelement results for cases when the OP2 file does not contain the case control datablock or any EXTRN definitions.Previously the matrices were sized to their non-zero content and DOF fields contained numeric indices into the non-zero rows and columns. DMI matrices are now returned as their original size, and DOF fields are empty.Import stress invariants from OESX results in OP2 files.New method sectionLoads to calculate section loads from Grid Point Force Balance.csd and psd now allow you to specify a negative overlap, which causes the function to skip samples between blocks when computing the output.integ now has the ability to specify the interpolation type when integrating.xform now accepts the strings 'r', 'd', and 's' as a shorthand way of specifying the reference, displacement, and storage coordinate systems.imat_cs/keep, imat_elem/keep, imat_node/keep, and imat_tl/keep have been modified to return an unsorted list of entities matching the IDs specified, returning a warning for IDs specified that are not in the object.New MIFODS graphical application to extract Operating Deflection Shapes.Fix bug appending to OP2 files where the EOF record was not removed, causing subsequently written datablocks to sometimes not be recognized.Temperature import from PCH now imports as imat_shp to be more consistent with how it is stored in OP2.setdisplacementcomponent now allows you to set the deformed scale factor.Support complex data for von Mises invariant calculation.New method filteru to filter time histories using a user-supplied filter.The following lists provide a history of changes to IMAT. IMAT Revision History IMAT Revision History