Set up Database for IP

Use the Set up Database for IP option, (geogxnet.dll(Geosoft.GX.IP.SetupIPDatabase;Run)*), to verify if a Geosoft database has all the necessary components for IP processing.

Set up Database for IP dialog options

Database		Database to be verified. The database is checked for all the mandatory IP channels. Missing channels are reported. Script Parameter: SETUP_IP_DATABASE.DATABASE
Template		All the settings can be saved into or read from this file. The first time running this tool you can save the IP settings by providing a file name then clicking on the Save button. In subsequent uses, you can load the parameters from this file by clicking on the Load button. Script Parameter: SETUP_IP_DATABASE.TEMPLATE
IP Array
Array type		There are dedicated IP tools for the conventional Inline arrays that take advantage of the one- dimensional setting and do not require both the X & Y channels to be present. In this case select Inline. If the data has both X & Y coordinate channels you can select the 3D option. If both X & Y channels are present even if the data has been collected as an Inline array you can select 3D. Script Parameter: SETUP_IP_DATABASE.ARRAY_TYPE
Configuration		Select the electrode configuration from the drop-down list. The electrode tabs will adjust accordingly to prompt you only for the needed electrodes. Script Parameter: SETUP_IP_DATABASE.ARRAY_CONFIGURATION
Nominal direction		This entry only appears for the Inline IP data array. Select survey direction relative to the local coordinate system. If the direction is E-W, the transmitters and receivers will be expected to be suffixed with X, while for N-S they will be suffixed with Y. However, this is not a mandatory syntax. Script Parameter: SETUP_IP_DATABASE.NOMINAL_DIRECTION
Electrodes Depending on your Array type selection you will next be prompted for the coordinates of a minimum 2 and a maximum of 4 electrodes. These are indicated with an asterisk ().
Inline Array Type		3D Array Type
Tabs Transmitter 1 Transmitter 2 Receiver 1 Receiver 2	Only one coordinate per electrode is mandatory; that is the coordinate along the survey line (Along-line channel). The other coordinate if present, it can be provided (Across-line channel). When plotting maps, if the other coordinate is left blank, the numeric value of the line number is used as the other coordinate. Note that each line can have a designated value that is not the same as the line number. See, Modify line location. Since the survey lines may be in the X or Y or any other direction, intentionally the X & Y designation have been omitted from the labels. If the elevation is also present in the database, you can provide it (Z). If so, the elevation will be honoured when making 3D or section plots. SETUP_IP_DATABASE.[T1ALONG,T1ACROSS, T1Z, T2ALONG, T2ACROSS, T2Z, R1ALONG, R1ACROSS, R1Z, R2ALONG,R2ACROSS2Z, R]	Tabs Transmitter 1 Transmitter 2 Receiver 1 Receiver 2	The electrode X & Y coordinate channels are mandatory entries. If the elevation is also present in the database, you can provide it (Z). If so, the elevation will be honoured when making 3D or section plots. Script Parameter: SETUP_IP_DATABASE.[C1x, C1Y, C1Z, C2X, C2Y, C2Z, P1X, P1Y, P1Z, P2X, P2Y, P2Z]
Nominal A-spacing	The base spacing between electrodes. Script Parameter: SETUP_IP_DATABASE.ASPACING
Distance units	The distance units should be the same for all position channels and electrode spacings. Script Parameter: SETUP_IP_DATABASE.LINEAR_UNITS
[More]
Measured IP
Domain type		IP data is generally collected in time domain. Occasionally, surveys are conducted in frequency domain. There is also considerable historical IP data collected in the space domain. Select the domain of the survey. Script Parameter: SETUP_IP_DATABASE.DOMAIN_TYPE
Time Domain		Frequency Domain
IP	Name of the IP data array channels. Script Parameter: SETUP_IP_DATABASE.IP	Amplitude	Name of IP Amplitude array channel. Script Parameter: SETUP_IP_DATABASE.AMPLITUDE
Number of windows	Number of elements in the IP array. Script Parameter: SETUP_IP_DATABASE.WINDOWS	Phases	Name of the Phase array. Script Parameter: SETUP_IP_DATABASE.PHASE
Delay time	The elapsed time before starting to record the IP readings. Script Parameter: SETUP_IP_DATABASE.DELAY	Number of frequencies	Number of elements in the Amplitude array. Script Parameter: SETUP_IP_DATABASE.WINDOWS
Time windows	The consecutive time windows over which the data has been averaged. The Calculator button located at the right end of the entry allows you to input/edit the time windows. Script Parameter: SETUP_IP_DATABASE.WINDOWS	Base frequency	The base frequency of IP readings. Script Parameter: SETUP_IP_DATABASE.BASE
		Frequencies	The consecutive frequencies over which the data has been collected. The Calculator button located at the right end of the entry allows you to input\|edit the frequencies. Script Parameter: SETUP_IP_DATABASE.FREQUENCIES
Current / Voltage Tab
Current channel		Input current channel. Leave blank if the data is normalized to the current. Script Parameter: SETUP_IP_DATABASE.CURRENT
Current units		Supply the units in either Amps (A) or miliAmps (mA). Script Parameter: SETUP_IP_DATABASE.CURRENT_UNITS
Voltage channel		Input primary voltage channel. Script Parameter: SETUP_IP_DATABASE.VP
Voltage units		Supply the units in either Volts (V) or miliVolts (mV). Script Parameter: SETUP_IP_DATABASE.VOLTAGE_UNITS
Self potential channel		Optional Self Potential channel. Script Parameter: SETUP_IP_DATABASE.SP

Application Notes

In addition to the imported channels, the IP database contains calculated channels, generated on import. However, if you have already imported the IP data into a normal database, this GX will help you check and tag it as an IP database. The calculated channels are:

IP_AVG: The Averaged IP
MF: Metal Factor
ResCalc: Calculated Resistivity
X,Y,Z: Pseudosection point positions
STN: Station
Type: Type of survey

Additional channels that you can interactively adjust are also added:

QC: Primary mask channel
QC_RES: secondary mask channel
Topo: Topography

If you have calculated any of the above channels already by other means, and named them as indicated, they will be overwritten.

You can save the specified information into a template file, that you can use in a script or interactively for tagging similarly generated databases.

If an expected channel is not found, this GX will indicate them and not proceed. You can then take the corrective measures before proceeding.

The format for the time windows has been standardized with that for the voxel cell sizes in VOXSTAT.GX, with the existing addition that if you do not have the full number specified, the last value is assumed to be repeated as many times as necessary so that all array elements have an assigned time window value.

Variable Cell Size Syntax

Click here for the syntax definition:

n [x|X|*] m [[ ],] l [x|X|*]p [ ,] q

Where:

n & l represent the number of array elements

m & p are the value of the repeated element respectively n and l times

q is the last element value and if it is repeated, it is not necessary to enter the number of repetitions

The above sequence can be repeated as many times as necessary.

For example, for an array of 16 elements all of the following are acceptable:

30 (indicates 16 elements of value 30)
4x20 2x50,30 (indicates elements 0,1,2,3 have a value of 20, elements 4,5 have a value of 50, elements 6 to 15 have a value 30)
4*20 2*50 30 (is interpreted as above)
4X20 12*50 (indicates elements 0,1,2,3 have a value of 20, elements 4 to 15 have a value of 50)
30, 4x20, 2x50,30 (indicates element 0 has a value of 30, elements 1,2,3,4 a value of 20, elements 5,6 a value of 50, followed by 9 elements of a value of 30)

*The GX.NET tools are embedded in the geogxnet.dll file located in the "...\Geosoft\Desktop Applications \bin" folder. If running this GX interactively, bypassing the menu, first change the folder to point to the "bin" directory, then supply the GX.NET tool in the specified format. See the topic Run GX for more details on running a GX.NET interactively.