This following is a list of common functions and class methods.  It is not exhaustive, but acts as general reference.

• binAverager - averages over an axis, e.g. converts hourly data to daily average
• concatenate - concatenates a series of variables
• contour - make a contour or raster plot of variable
• coordConv - converts between different coordinate systems
• coordInDomain - tests if coordinate in spatial domain
• createVariable - creates an iovar variable
• datacombineMeta - combines metadata from a series of variables
• dateInDomain - tests if date in temporal domain
• dates2Cdtime - converts dates to cdtime object
• dates2DateTime - converts dates to mx.DateTime objects
• layerInDomain - tests if layer in vertical domain
• ocontour - overlay a contour over another contour plot
• ovector - overlay vector plot over another contour
• open - opens a file for reading or writing, returns iofile
• scan - scans through files for date range, returns iofilescan

2. iofile methods

• close - closes a file
• extract - extracts a variable from a file
• listvariables - list the variables in a file
• write - writes a variable to a file

3. iofilescan methods

• close - closes a file
• extract - extracts a variable from a file
• listvariables - list the variables in a file

4. iovar methods

• contour - makes a contour or raster plot
• getLatitude - returns latitude axis
• getLongitude - returns longitude axis
• getLevel - returns level or layer axis
• getTime - returns time axis
• getValue - converts iovar to Numeric array
• ioM - iometa object, an attribute
• IO2cdms - converts iovar to cdms variable
• IOchangeDate - changes the start date of time axis
• IOclone - makes a copy of the iovar object
• IOcoordConv - coordinate converter
• IOcoordInDomain - tests if point in spatial domain
• IOdateInDomain - tests if date in temporal domain
• IOequal - tests 2 variables for data equivalence
• IOlayerInDomain - tests if layer in vertical domain
• IOmodVar - modifies the variables metadata
• IOsubset - subsets the variable
• ocontour - overlays a contour plot over another contour

5. iometa methods

• copy - copies the iometa object
• replVar - replaces the variable's metadata in iometa
  

6. cdmsmeta methods

• copy - copies the cdmsmeta object
  
• getAxes - returns a list of the axes