Import IP Data from Geosoft IPRED File

Use this dialog to import IP data from a Geosoft IPRED format file.

Import Geosoft IPRED File

IPRED file(s)

The name of the Geosoft IPRED file. Multiple files can be selected.

Script Parameter: IP.IPREDFILE

Channel

Channel name to import data to. If no channel name is provided, the channel name is made to be the file name extension. For instance the file "DATA.IP" will produce a channel "IP" to contain the data.

Script Parameter: IP.IPREDCHAN

Application Notes

The IPRED import supports old DOS-version IPRED formatted data.

Two typical IPRED files are shown below:

IP DATA
LINE:574000E ARRAY:DPDP DIPOLE:300.0 UNITS:M RES_UNIT:OHM_M FILTER:4
X Y FILT N=1 N=2 N=3 N=4 N=5 N=6 
574000 476450 3.8 * * 3.0 * * * 
574000 476300 * * 3.6 * 6.5 * * 
574000 476150 3.1 3.4 * 5.3 * 7.1 * 
574000 476000 * * 5.2 * 4.7 * -4.5 
IP DATA
LINE:574000E ARRAY:DPDP DIPOLE:300 UNITS:M RES_UNIT:OHM_M FILTER:4
stn filt n=1 n=2 n=3 n=4 n=5 n=6 
476450 3.8 * * 3 * * * 
476300 * * 3.6 * 6.5 * * 
476150 3.1 3.4 * 5.3 * 7.1 * 
476000 * * 5.2 * 4.7 * -4.5 

The first line is a title line, and is generally ignored.

The second line contains information about the Line number, array type, dipole separation, units, and distant electrodes.

The third line contains channel names. The station (plotting point) location can be specified in two ways:

If the first two columns are "X" and "Y", then "X is used for the station location for lines running E-W (and ending in "N" or "S", and "Y" is used for lines running N-S (and ending in "E" or "W").

If the first column is "Stn" (or "STN"), then it is read directly as the station location.

The "FILT" column is ignored on input.

Electrode locations are constructed using the station locations, the array type, and the default line direction. For PLDP surveys, the plotting convention is taken from the IP Defaults.

Multiple survey lines are supported in a single file, with each new survey line beginning with a new "LINE:…" header.

This import does not contain any information for "I" (current), "Vp" (voltage) or apparent resistivity. It does not support windowed or multi-frequency IP data.