Programming tools

These are programs that I have created and found useful in my research. They are provided here for others to use without restriction, and with no warranty.

 

GEOS-Chem

• BPCH_CHANGEDATE

  Download

  This program changes the date of a bpch file at the shell prompt, without requiring IDL. Written in Fortran.

 

IDL

• NCDF_TOOLS

  Download

  Read and create netCDF files more easily. This library of programs handles the messy details of file access so you can focus on using and interpreting your data.

• TRANSREAD_DELIM

  Download

  The simplest and most versatile program that I know for reading delimited ASCII files in IDL, such as CSV files generated by MS Excel. Also accepts fixed format ASCII files. Based on C. Markwardt's program transread.pro.

• TAPPLY

  Download

  Apply any function (user-defined or native IDL) to subsets of an array. Based on an R statistical program of the same name.

• CAT_STRUCT

  Download

  Concatenate (combine) 2 or more structures into a single structure by combining the contents of each tag within each structure.

• SAFE_OPENW

  Download

  Safely opens files for output while preventing unintentional overwrites. Requests user confirmation before overwriting a pre-existing file. The native "openw" command works similarly but immediately overwrites any prior file with the same name.

• BOXCAR

  Download

  Apply boxcar averaging to a 1-D array. Just specify the array and boxcar window width, so it's simpler than the built-in IDL "smooth" and "filter" functions. Supports centered, forward, and backward windowing.