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Introduction

A layer model is a collection of grids which have the same grid position and resolution. These grids are collected into a layer folder which is of type Generic and has the Schema Layer model.

Exercises:

Create and display a layer model

 

Exercise

Create a layer model

  1. Create a Generic folder and set the schema to Layer Model.
  2. Copy all time grids into this folder and secure the correct ordering from top to bottom by naming them with a prefix number 01 02 03 ... etc.
  3. Right click your layer model and select Zoom to Folder on the time layer model and draw the window frame and axes.
  4. Display all the layers in random colors.
  5. Create a map command that display the color using color range from 1000 to 4200.
Exercise

Display a layer model

  1. Right click your layer model and select Zoom to Folder
  2. On the main toolbar click the and icons.
  3. Make sure your layer model is selected in the project, then go to your Toolbox and run the Display command. Notice that the grids are displayed in random colors.
  4. Click the icon until only the frame and axes are displayed and no grids are displayed.
  5. Right click your layer model and select Utilities > Map smooth with same color range
  6. In your Toolbox execute the Map legend under Shared Commands > Visualization


Layers mapped with the same color range

 

Exercise

Check and truncate the layer model.

  1. Clear your screen by clicking the icon.
  2. Visualize the layers one by one to see if there is any overlap.
  3. Right click your layer model and select Utilities >Check and truncate layers from top and downwards.
  4. Keep the default settings and click Execute to perform truncation from top and downwards.

Note that the truncation will overwrite your existing layer model. Thus you should create a copy of your layer model before performing this on your own data.

Cross sections

Having a layer model it is possible to make cross sections through any part of the model. In order to quickly create cross sections and perform other calculations we need to have layer model in workspace 

Exercise

Create a fence of cross sections

  1. Right click your layer model and run the command Initialize the layer model into Workspace. The layer model grids are read into workspace for fast retrieval.

  2. Create a new Generic folder and give it the name Cross sections and set the schema to Cross sections. Cross section commands will now be available on this folder.
  3. Right click the Cross section folder and select Perform cross sections >Display fence type cross section. It will display and save the fence data as crossdata_fence in the Cross section folder.
  4. Clear your screen by clicking the icon
  5. Right click crossdata_fenceIn your Cross section folder and run the commandVertical redisplay from cross section data.

  6. Right click your Cross section folder and run the command Legend for cross section.

Your graphics screen should look similar to the image below.


Cross section fence display


It is possible to create a single cross section, using cursor positions. By using one cursor position it is possible to create a cross section in X or Y direction and by using two cursor positions it is possible to create a cross section in any direction.

Cursor positions are digitized point used as input points for different commands

Exercise

Create a single cross section

  1. Clear your screen by clicking the icon
  2. Right click the Cross section folder and select Perform cross sections >Display fence type cross section. It will display and save the fence data as crossdata_fence in the Cross section folder.
  3. Clear your screen by clicking the icon
  4. Right click crossdata_fenceIn your Cross section folder and run the commandVertical redisplay from cross section data.

  5. Right click your Cross section folder and run the command Legend for cross section.

Your graphics screen should look similar to the image below.


C

Other cross section commands

Setting cursor for cross section action

  • When doing cross sections it is smart to have the bottom layer displayed.
  • Place a cursor position on the bottom layer using key letter y when in 3D mode, or just click when in 2D mode.
  • Cross section between two cursor points: Set two cursor marks. Geocap remember them even if only the latest is shown.


Cross section study of the time layer model


Layer cube

Another option for fast cross sections is to generate a solid layer cube.

Exercise

Create a layer cube.

  1. Use Zoom to Folder on the layer model to get the overall layer window.
  2. Highlight layer model folder and activate the command Cube generation of all layers.
  3. Click Use Active Window to set the cube window.
  4. Set the cube grid increments to 500 500 20 to get 282 x 190 x 20 grid nodes.
  5. Click Execute. The cube is saved in workspace cubegrid.
  6. Get the cube gid into the project under the Time folder and rename the cube to time_cubegrid.

  7. Apply the Manipulator to display the layers in the cube in a fast way in all directions.

    Setting cursor for cross section action

    • The manipulator is for a cube is activated by cube > Utilities > Manipulator cube display.
  8. Run the manipulator in all directions on the cube.
  9. Display a layer grid to verify that the cross sections from the cube have correct extensions.


Cross sections displayed from a layer cube

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