Hello, The white zones would appear to represent gaps between the interpolation, which in turn implies that the blanking distance parameter needs to be increased from the default value. The blanking distance parameter specifies how far away any data point to interpolate during gridding.
When you are gridding and leave the blanking distance parameter blank, the program calculates a default blanking distance value, based upon the survey area and the amount of data within that area. If you created this grid gridding using minimum curvature gridding, the default blanking distance can be viewed in the "RANGRID.log" file which sits in the same directory as the grid. This file can be opened in any text editor. Generally the default blanking distance should not result in gaps like the ones seen in your grid, particularly when it appears that your data coverage is quite consistent across the area. Indeed, if this result indeed does arise from using a default blanking distance, then you should specify a blanking distance that is greater than the default, in order to fill in the observed gaps in the output grid. We have an excellent overview of gridding which is available here: http://www.geosoft.com/media/uploads/resources/technical-papers/topicsingriddingworkshop.pdf Best regards, Darren Andrews Forum archives can be accessed here: http://lyris.geosoft.com/read/?forum=geonet You are currently subscribed to geonet as: [email protected]. To subscribe or unsubscribe from any of our forums, select the User Forum selection on the Geosoft Community page: http://www.geosoft.com/support/community/forums/register/ --- Forum archives can be accessed here: http://lyris.geosoft.com/read/?forum=geonet You are currently subscribed to geonet as: [email protected]. To subscribe or unsubscribe from any of our forums, select the User Forum selection on the Geosoft Community page: http://www.geosoft.com/support/community/forums/register/
