Quality Control by Electrode

Use the Quality Control > By Electrode menu option to reject rows with a faulty transmitter or receiver electrode. You can invoke this GX from within the 3D viewer to view the updated 3D display of the electrode readings. This is an interactive tool.

Quality Control by Electrode dialog options

Plan map	Select an existing map of the area of interest on which to display the visual status of Quality Control by Electrode.
Display on map	The above map allows for a visual inspection of the current QC state. To maintain the map uncluttered, you will be displaying at any one time only one and not both sets of statuses: QC Resistivity or QC IP You can show accepted, rejected, or both sets of electrodes: Plot accepted electrodes Plot rejected electrodes By default, the location of the above combination will be dynamically shown on the map: Accepted electrodes will retain their colour, and rejected electrodes will be plotted in grey. Transmitters are displayed as crosses, and receivers are plotted as circles. However, you can further unclutter the display by opting to show only the location of the accepted electrodes, or only the rejected electrodes.
Electrodes to mask
	Click to add a new QC check.
	Click to remove a QC check.
Electrode	An electrode can act as a transmitter for some readings and a receiver for others. Identify if the QC you are about to modify applies to the electrode in its transmitter (Tx) or receiver (Rx) mode. If, however, the selected electrode acts only as a transmitter (Tx) or only as a receiver (Rx), its state will be indicated without offering the option to modify it.
X & Y	These 2 drop-down lists are populated from the database with the coordinates of the electrodes. The coordinates of each electrode appear only once regardless of how many times it has participated towards readings. Select the X & Y of the intended electrode. If you do not know the exact location of the electrode to QC, use the button.
	You can define the electrode to mask on the above map. Clicking on Locate takes you to the map and allows you to click on the intended electrode. The coordinates of the electrode closest to the clicked point will be found and displayed in the X & Y columns, and its location on the map will be indicated with a red circle.
QC Resistivity QC IP	Once you have identified the Electrode mode, i.e., Tx or Rx, you can set its QC Res and QC IP mask status independently.
[Apply]	Click on the Apply button to commit the changes to the database without closing the dialog.
Retain plotted electrode symbols on plan map on exit	Check this box if you are satisfied with the identified readings to exclude and you would like to save the location of the rejected group of electrodes upon exit.

Application Notes

It is recommended that the selected map contains a grid covering the area of interest. This grid will act as a backdrop. Make the grid transparent to provide better visibility for the dynamic QC status.

On the same plan map you can have the groups of rejected electrodes by other QC tools, but they are turned off when you run this GX to keep the focus on identifying the rejected “by electrode” and not show a cluttered map.

If you do not have a map, first run IP > Plot > IP Plan Map to generate one.

The display allows for a visual inspection of the current QC state. Due to the multitude of Transmitter & Receiver pairs, and the fact that any given electrode can act as a transmitter for some readings and a receiver for others, it makes for a very crowded map if all the QC flags are plotted at once. In the interest of clarity and since you will be "QC’ing" one aspect of the data at a time, it is advised to display only the symbols relevant to that aspect.

Prior to running this tool, turn off all groups, such as preexisting location symbols that may obstruct the visual inspection of the QC in progress.

If licensed for IP, this GX will be available inside the 3D Viewer. If you run it within the 3D viewer upon closing the GX the 3D Array Plot is updated to reflect the latest QC state, and readings that have been turned off will be displayed in grey.