Whether you’re using Explorer, Planner, or Adviser you have the capability to filter or select data stream records. There are two types of filtering that can be done in GuideK12; attribute filtering and spatial filtering. Let’s explore each type.
Attribute filtering allows you to filter or select records based on characteristics associated to the data stream you’re working in. Let’s say you’re working in the Student data stream and you want to select all students in a particular grade. The following steps will walk you through that selection process:
- Click the Configure Attribute Filters button to bring up the dialog.
- In the dialog click the Grade category on the left, you will now see Grade values to choose from on the right.
- Check the box next to the value(s) you want to filter on. If you choose multiple values in a category the logical operator applied within a category will be the OR operator. This means to be selected the student’s grade level would be “Value 1” OR “Value 2” OR, etc.
- Click Finish in the lower right hand corner of the dialog to complete the selection.
You can also filter on additional categories if you need. Please keep in mind that as you add categories to a filter the logical operator across multiple categories is the AND operator.
Spatial filtering is done by using the map tools on the map . You can choose to draw your own features to use as selection areas or use existing features from the overlays loaded for your application. Let’s take a look at those tools:
- Draw Polygon – Using the Draw Polygon tool you can draw your own shapes to select data stream features. To start drawing do a mouse click and release, add additional vertexes to create the shape you want. When finished double click to finish your polygon or single click at the point of beginning.
- Draw Point – You can draw point features if you’re wanting to select data stream features based on a certain radius distance. Simply click as many points as you want. To perform the selection you’ll need to specify a buffer distance using the Advanced Options .
- Draw Line – Just as you do for points you need to specify a buffer distance using the Advanced Options. Click points to draw your line and once your buffer distance is set the selection will be based off of your line you just drew.