From Lrose Wiki

Colide writes the locations of significant storms to an SPDB database.


Colide takes storm information from a Titan database, determines which storms are significant in terms of longevity and area criteria, and writes the latitude and longitude of the storm initiation to an SPDB database.


The following items are required:

  • Storms data from Titan

Parameter file

Colide uses one parameter file that includes input/output directories and filters.

Ensure file is up to date

To obtain the default parameter file, use the following command:

/path/to/lrose/install/bin/Colide -print_params > param_file_name

If you already have a parameter file and simply want to check for (and add) updated parameters while retaining current parameters, use the following command:

/path/to/lrose/install/bin/Colide -params orig_param_file_name -print_params > new_param_file_name

Important parameters


  • fixed_const: fixed constant strings interpreted by user functions
  • volume_before_filter: volume filters applied before the sweep filters; all filters available can be viewed with the -print_operators flag
  • filter: filters to apply to sweeps; all filters available can be viewed with the -print_operators flag
  • volume_after_filter: volume filters applied after the sweep filters

VirtVol Parameters

  • trigger_url: oath to trigger off of
  • input_url: names of parameter files for input paths
  • output_url: names of parameter files for output paths

Running Colide

To check all command line options for Colide, including debugging options and file paths, type the following command into a terminal.

/path/to/lrose/install/bin/Colide -h

To see all the filtering options for Colide, type the following command into a terminal.

/path/to/lrose/install/bin/Colide -print_operators

Once your parameter file is complete, use a command similar to the following to run the application:

/path/to/lrose/install/bin/Colide -params param_file_name

The user can also specify the location of cfradial files in the following manner:

/path/to/lrose/install/bin/Colide -f /path/to/cfradial/files/ -params param_file_name