Creating a local scene and adding x y z cartesian-based data in ArcGIS Pro

[OlatundeMosbalaje]

I am new generally to GIS and particularly to ArcGIS Pro; I just needed to use the Geostatistical Analyst - am not new to geostatistics. I am having trouble getting my x/y/z/attributes data frame to ArcGIS Pro; x, y and z are in meters not in degrees. Yes I have added the data (from a csv file) as an XY Event to a blank Basemap (ensuring to indicate the Z coordinate field); converted the Basemap to Map; and converted the Map to a Scene - thinking all these would have rendered the data 3D. I have two major issues:

1. Attempt to run the Geostatistical Wizard on the data is not working as it seems the Wizard sees the data as 2D and complains that multiple samples exist at same point.
2. I want the data appear in a completely arbitrary cartesian LOCAL scene (like a 3D container in my office with origin 700000,732500,0). I tried changing the coordinate setting of my project file/maps but I keep seeing all available options tied to one location on earth. What coordinate setting goes for my arbitrary 3D space.

Edit: I have changed the settings using Project-->Options-->Units-->Location Units. However, I am still forced to choose an actual zone (not arbitrary as I expect) at Project-->Options-->Map and Scene-->Spatial Reference. I chose NGN UTM Zone38N. Is all this alright? However, the data is still not being seen as 3D both in display and in running Geostatistical Wizard.

[SteveLynch]

olatunde.mosobalaje‌

I have a few questions.

• what do you want to use Geostatistical Analyst for?
• when you run Make XY Event Layer, what spatial reference do you use?

If you've supplied the correct spatial reference then the points should draw correctly on the default basemap. You don't have to change anything.

In Geostatistical Analyst coincident data are points that have the exact same (x,y) location.

It might help if you tell us what spatial reference you picked and include a screenshot showing some of the records from the .csv file.

Regards

-Steve

[OlatundeMosbalaje]

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

[SteveLynch]

'Tunde

We don't offer 3D interpolation in ArcGIS currently, however, we will have something in the future, still too early to say exactly when.

With your data you'll be able to use the location (x,y) and interpolate on depth or porosity to create a depth or porosity surface.

-Steve

[OlatundeMosbalaje]

Steve,

Thank you.

-'Tunde