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GIS Instructions

How to select a region to access GIS

Roll your mouse over the Texas map and select a region to explore. The chosen wine region is highlighted to indicate your selection. You may change your selection by clicking on any other region or clicking the Reset button.

How to use GIS to explore maps and search data

Upon selection of a given region, users are redirected to a GIS application (AVATXIS) that provides interactive exploration of climate, soil, and topographic variables of significance to grape production.

Elevation and Hillshade are the default layers that are visible until the user selects a layer of interest to explore.

Step 1: Navigating the Table of Contents (Layers list)

A sample Table of Contents is illustrated with the default Elevation layer open.

A closed group, click to open.
An open group, click to close.
A map layer.
A hidden group/layer, check to make visible.
A visible group/layer, check to hide.
A visible layer, but not at this scale.
A partially visible group, click to make visible.
An inactive layer, click to make active.
The active layer.
*To zoom to active layer, click the layer name.
** To access data-attribute through "identify" and "find" functions, the target layer must be activated.

Clicking on the Tabs above the Table of Contents directs the user back and forth between the list of layers and the legend of the layers that are currently turned on by the user.

Step 2: How to add/remove GIS layers

In order to add or remove layers from the map, the user must click on the check box in front of the desired layer of interest. The layer becomes visible but is not active until the user clicks on the circle button in front of the now visible layer. The example shown here depicts the layer Mean Temperature – July selected to be visible and the active layer.

Occasionally refresh the map in order to view changes.

Step 3: The Map Area

The Map Area displays the selected visible layer and the overview window (upper left corner) that depicts the location of the region within Texas. The example figure displays Elevation and Hillshade (the beginning default layers) for the Texas High Plains.

The active layer and selected tool is displayed below the Map Area at all times.

Step 4: Navigation Tools

Clicking on the map area after choosing any of the navigation tools below elicits the respective response.

The Navigation tool functions are described below :

  • Overview: Turns overview window on and off
  • Zoom: Zooms map area in and out
  • Full Map: Zooms to full map of region
  • Move: Move entire map area
  • Identify: Used to identify features of active layer
  • Find: Search function to find locations with specified data values
  • Measure & Set Unit: Used to measure straight-line distance based on desired units
  • Print: Prints map or feature displayed in map area
  • Clear All: Clears all features

Step 5: Generating an Attribute Table

Clicking on the active and selected Soil or Geology layer generates an attribute table of all the data associated with the respective layer.

Step 6: Refreshing the Map

Occasionally refresh the map by clicking on the refresh button to ensure changes are displayed.

The Winegrowing Regions of Texas was created and is maintained by the Knowledge Engineering Laboratory as a component of the Texas Winegrape Network.
Website design by Subodh Prabhu, Elvis Takow, and Ed Hellman
© Copyright 2008 Knowledge Engineering Laboratory