Latest Contributions by OlatundeMosbalaje

Steve, Thank you. -'Tunde ... View more

Dear Steve, Thank you for your response. Here, I answer the questions you raised. 1. I want to use Geostatistical Analyst to do variogram estimation and modelling as well as estimate values at unsampled points. My data is porosity values of rock samples taken at various sub-surface depths in several wells drilled in a certain field. So each sample points has its x, y, z coordinates (in meters) with a false origin at 700000m,732500m,0m. Now, my project has nothing to do with the topography of the area; I only need to analyze the data for spatial continuity. So am alright having the data in an arbitrary 3D space (I read on ArcGIS Pro help pages that such arbitrary projection of data is possible. 2. In running Make XY Event, I had to use NGN UTM Zone 38 spatial reference. I chose this option because the field is located in Nigeria; although I had thought that this setting should not be necessary if I am working in an arbitrary space. Yes, I have data "points that have the exact same (x,y) location" but such points are separated by their z-coordinates which are not same values. With same x,y but different z values, I do not expect the data points to be coincident. By the way, these are the steps I have taken in my latest attempt; may be I did something wrong. 1. I opened a new project (Blank template) 2. I set Project >Options >Units-->Location Units to m (used to be dd) 3. I set Project >Options >Units-->Distance Units to m (used to be ft) 4. I set Project >Options >Map and Scene-->Base Map to "none" (because I do not want data tied to any specific geographical location). 5. I set Project >Options >Map and Scene-->Scene to "local" 6. I set Project >Options >Map and Scene-->Spatial Reference to "NGN UTM Zone 38" 7. I did Insert (ribbon) > New Map (drop down menu) > New Scene. 8. I did Map (ribbon) >Add Data >XY Event Data I chose browse to my .csv file and added it. I X Field, Y Field and Z Field in the dialog box to Easting, Northing and Depth fields of my .csv file, respectively. I run the Event. 9. I right-clicked on the data layer (in Content pane)and set Elevation to "Relative to the ground". Also, I selected "A field" button and selected "Depth" field in the drop down list. After all of these; Geostatistical Wizard still detected coincident points which are actually all points sharing same x,y location but different z location. Again, Steve, thank you for your response. I look forward to having this challenge solved. -'Tunde ... View more