You can use Lists & Spreadsheet application to capture information about objects in the Graphs & Geometry application. For example, you could track changes in the area of a triangle as you change the length of a side in the Graphs & Geometry application.
Captured values replace values in the column. If you prefer, you can remove all data from a column before starting a new capture by clicking Clear Data on the Data menu.
1. | Make sure the data value that you want to capture is linked to a variable name. |
2. | Click the column formula cell (the second cell from the top) of the column in which you want to capture the values. |
Note: Captured values replace values in the column.
3. | Click Data > Data Capture >Manual. |
A capture expression is inserted into the column formula cell with var as a placeholder for the name of the variable you are capturing.
4. | Replace the letters “var” with the name of the variable to capture from Graphs & Geometry. For example, type area. |
The formula cell now contains an expression similar to =capture(area,0).
Note: The argument “0” tells Lists & Spreadsheet that you want to trigger each capture manually.
5. | Press Enter. |
6. | From the Graphs & Geometry application, change the object with a measured value stored as the variable (area, in this example) referenced in the data capture expression. |
7. | Each time you are ready to capture the current value of area, press the capture keys. |
Windows®: Press Ctrl+. (the period key).
Mac®: Hold down “ and press . (the period key).
Handheld: Press / ^.
The current area value is added to the end of the list as a list element.
When you capture data automatically, you can specify that you want the captures to be triggered by:
• | Changes in the captured variable only. |
• | Changes in the captured variable or additional variables. |
This lets you set up multiple columns of synchronized captures, such as the x and y coordinates of a moving object.
1. | Clear all columns that you will be using for the captured data. |
2. | Make sure any data values that you want to capture are linked to variable names. |
3. | Click the column formula cell (the second cell from the top) of the column in which you want to capture the values. |
4. | Click Data >Data Capture >Automatic. |
A capture expression is inserted into the column formula cell with var as a placeholder for the name of the variable you are capturing.
5. | Replace the letters “var” with the name of the variable to capture. For example, type objpathX. Alternatively, you can select the variable name from the Variables menu. |
The formula cell now contains an expression similar to =capture(objpathX,1).
Note: The argument “1” tells Lists & Spreadsheet that you want the captures to be triggered by the variable change.
6. | If you want the capture to also be triggered by changes in an additional variable or variables, type a comma after the 1, and then type the variable name or the name of a list that itemizes the variables. |
The formula cell will contain an expression similar to =capture(objpathX,1,objpathY).
7. | Press Enter to complete the formula. |
8. | If you are capturing multiple columns of synchronized data, set up the additional columns. For example, you might set up a second capture variable using =capture(objpathY,1,objpathX). |
9. | When you are ready to capture the values, begin moving the object or start the animation that affects it in Graphs & Geometry. |
Each captured value is added to the end of the list.