1.1.1 Creating a Simple X-Function

X-Functions are created with X-Function Builder. You can open X-Function Builder by choosing the Tools: X-Function Builder... menu.

The X-Function Builder dialog is shown below.

Ocguide xfdialog default.png

Creating X-Function

The steps below will walk you through the creation of an X-Function that will perform the task of copying data from one column to another column.

  1. Select Tools: X-Function Builder... menu to open the builder.
  2. Enter X-Function name CopyCol in X-Function box
  3. Each variable and parameter of the X-Function should be on its own row. Right-click on the gray area below the table and choose Add Variable to add another more row.
  4. This X-Function needs 2 variables to specify the input and output columns. Fill it out like the image below. Most columns are self-explanatory.
  5. The Data column is for setting the default value. <active> means current selected column, <new> means new column. If set as shown, Calling CopyCol will copy current selected column to new column by default.
  6. Ocguide xfdialog.png
  7. Click Ocguide xfdialog savebutton.png button to save the X-Function. The very first time you create an X-Function, the following reminder shows to copy the whole X-Function folder structure from system X-Functions area to your User-Files Folder. Choose the 2nd radio so that it will not popup again.
  8. Copy xfunction structure.png
  9. When the Save As dialog appears, navigate to X-Functions to see the whole X-Function folder structure. Pick an appropriate folder. E.g. CopyCol X-Function is to copy columns in worksheet. So pick Data Manipulation > Worksheet folder to save the file. Usually the file name is the same as the X-Function name. So just click the Save button.
  10. Click the Ocguide xf treeview button.png button to switch to the tree view. Make sure the Labtalk check box is checked so that so the X-Function can be used in the Script and Command Windows.
  11. Set Auto GetN Dialog to Simple GetNBox. The Auto GetN Dialog provides the choice to use the X-Function with or without dialog and what type of dialog. Click Save button again to save the change.
    Ocguide xfsimpledialog treeview.png
  12. Now we need to write the Origin C code that will do the work for our X-Function. Click on the Code Builder button Ocguide xfdialog codebuilderbutton.png. This will open the X-Function in Code Builder where we can write our Origin C code. In the main function, add the following Origin C code:
    ocol = icol;
  13. Click the Compile button and then click the Return to Dialog button to go back to X-Function Builder. Click Ocguide xfdialog savebutton.png button again.
  14. Close the X-Function builder tool.
  15. You can always reopen the tool and choose Open button to load a created X-Function to edit further.

Using X-Functions

Now that we have successfully created our X-Function, we can test it.

  1. Create a new a worksheet with two columns. Fill column A and B with random numbers.
  2. Highlight Column A by clicking the A(X) header.
  3. In the Script or Command Window enter the X-Function name CopyCol without any variables after it and press Enter key to execute it with default settings.
  4. It will create a new column and copy column A data to it.
  5. Now highlight column B.
  6. In Script window, enter CopyCol -d and press Enter key to open the X-Function with dialog.
  7. This will open a Simple GetN style dialog as we specified when building the X-Function. The input and output are loaded with our default settings. Click the OK button.
  8. It will create a new column with column B value copied.

See X-Functions for more explanation of X-Function and how to call it.