IDL Changelog

What's new in IDL 8.5.1

• NEW FEATURES:
• FILE_MODTIME: You can retrieve the modification time for a file or files using the new FILE_MODTIME function. This is significantly faster than calling FILE_INFO if you only need the modification time.
• HASH, ORDEREDHASH, DICTIONARY new ::IsFoldCase method: The new IsFoldCase method can be used to check whether a hash, orderedhash, or dictionary is using case-insensitive keys (i.e. whether FOLD_CASE was specified when the object was created). For more details see HASH, DICTIONARY, or ORDEREDHASH.
• HDF4 VGroup Attribute Routines: For HDF4 files, you can now read and write the attributes for VGroups. For more details see HDF_VG_ATTRFIND, HDF_VG_ATTRINFO, HDF_VG_ATTRGET, and HDF_VG_ATTRSET.
• IDLnetURL::URLEncode and URLDecode Methods: You can use the new IDLnetURL::URLEncode and URLDecode static methods to convert strings to and from "percent encoding".
• WRITE PNG TO A BUFFER:
• The WRITE_PNG routine can now write its PNG output to a buffer variable instead of a file. This is useful when you want to convert the image to a Base-64 encoded image and embed it in a web page.
• LIBRARY UPDATES:
• The HDF4 library has been updated to version 4.2.11, while HDF-EOS has been updated to version 2.19.