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 Moving a set of datapoints

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Noba Posted - 08/22/2000 : 3:26:00 PM
I would like to know if it's possible to move a set of datapoints together on a graph in Origin 6.0? If so, how can I do that?

Thanks.

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scottp Posted - 08/28/2000 : 2:33:00 PM
Origin has the ability to easily move or reposition one data point at a time, while it is being displayed in a line and symbol or scatter plot. As you move the point within the graph, the numerical value of the data point being moved (X and Y coordinates) will also be updated in real time, in the worksheet containing the data.

Below is the method used to move a single point at a time:
Select Data: Move Data Points to move a data point in the active data plot. If this menu command has not previously been selected for the data plot, an Attention dialog box opens stating that the data plot is not set to have movable data points. Click Yes to enable the option. A cursor appears on a data point in the data plot. The Data Reader tool also becomes active and the Data Display tool opens. Click on the desired data point and drag to the new location with the mouse.

The Data Display tool displays the XY coordinates of the selected data point.

To complete the process, perform one of the following:

·Press ESC.
·Click on the Pointer tool in the Tools toolbar.
·Press ENTER.

There is also an option to TRANSLATE the data in the horizontal and/or vertical direction. Normally these commands will effect the entire dataset. By using the data markers to define a specific range of data it is possible to use the translation option to move only the data that is defined between the data markers. Effectively this will allow you to move a group of data first in the horizontal direction and then the vertical.

To set the data markers:
1. Click on the Data Selector tool in the Tools toolbar. Data markers appear at both ends of the active data plot. The Data Display tool also opens.
2. To mark the data segment of interest, click and drag the markers along the X-axis with the mouse. Release the mouse button when the marker displays at the desired data point. Perform one of the following actions after you have positioned the data markers to enclose the data segment of interest:

·Double-click within the selected range in the graph layer.
·Press ENTER.
·Click on the Pointer tool in the Tools toolbar.
·Press ESC.

Once the data markers are in place follow the instructions below:

To move the selected data points horizontally along the X axis, select Analysis:Translate:Horizontal. This menu command opens the Data Display tool if it is not already open. Double-click on the data plot (or click and press ENTER) to choose the initial data point. The XY coordinates of the data point display in the Data Display tool. Double-click again at any point on the page. Origin calculates the difference in X between the two selected X-coordinates and adds this amount to the entire active data plot. Because this menu command changes the X dataset in the worksheet, it affects all plot instances of the dataset.

To move the selected data points vertically along the Y axis, select Analysis:Translate:Vertical. This menu command opens the Data Display tool if it is not already open. Double-click on the data plot (or click and press ENTER) to choose the initial data point. The XY coordinates of the data point display in the Data Display tool. Double-click again at any point on the page. Origin calculates the difference in Y between the two selected Y-coordinates and adds this amount to the entire active data plot. Because this menu command changes the Y dataset in the worksheet, it affects all plot instances of the dataset.

[This message has been edited by scottp (edited 08-28-2000).]


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