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2.2.3.45 wextract

Menu Information

Worksheet Query...

Brief Information

Mask or extract data from worksheet using specified condition

Command Line Usage

  1. wextract iy:=[Book1]Sheet1!col(A) settings.stAlias.Cols:=1 settings.stAlias.AliasNames:=A settings.stCondition.Condition:="A<6" settings.Cols:=1;
  2. wextract iy:=[USMetropolita]"US Metropolitan Area Population"!(1:end) settings.stAlias.Cols:="2|3" settings.stAlias.AliasNames:="S|D" settings.stCondition.Condition:="D>500&&S>1000" settings.stMethod.Method:=1 settings.Cols:="0|2|3";
  3. wextract iy:=[Book1]Sheet1!col(A) settings.stAlias.Cols:=1 settings.stAlias.AliasNames:=A settings.stCondition.BeforeLoop:="j=1;" settings.stCondition.BeforeIfCondition:="if (i==col(B)[j]) {temp=col(A)[i];j=j+1;}" settings.stCondition.Condition:="A==temp" settings.Cols:=0;

Variables

Display
Name
Variable
Name
I/O
and
Type
Default
Value
Description
Input iy

Input

Range

<active>
Specify the input range.
Settings settings

Input

TreeNode

<unassigned>
Specify the extract settings. See more details in this page.
Output oy

Output

Range

<optional>
Specify the output range.

See the syntax here.

Description

This tool is in fact a script version of the Extract Worksheet Data tool. It directs Origin to locate data in the specified worksheet based on a user-specified conditional expression. The located data values are extracted. In other words, these values can be copied to another worksheet or marked with a specified color.

The settings variable can be used to customize the options for the operation. Please see this page for more details.

Examples

Example 1: To extract the cells from Column B where the corresponding cells in in Column A are less than 6.

Create a new workbook and fill the first column with row numbers and the second column with 2, 4, 6... (twice of the row numbers).

XFunction Wextract1.png

Type the following script in the command window.

wextract iy:=[Book1]Sheet1!col(A) settings.stAlias.Cols:=1
settings.stAlias.AliasNames:=A
settings.stCondition.Condition:="A<6"
settings.Cols:=1;

And the extracted data in Column B are shown in a new workbook.

XFunction Wextract2.png

Example 2:

Select File: Import: Single ASCII from the Origin menu. Import the file \Samples\Data Manipulation\Us Metropolitan Area Population.dat. The destination worksheet contains four columns: Population, Sq. Mi., Density, and Metropolitan Area. To select Metropolitan Areas in California where the Density is greater than 100 and output their Population, Density and Metropolitan Area to a new worksheet, you can type the following script in the command window.

str1$="D>100 AND M[i]$=="*, CA*"";

wextract iy:=[USMetropolita]"US Metropolitan Area Population"!(1:end)
settings.stAlias.Cols:="3|4"
settings.stAlias.AliasNames:="D|M"
settings.stCondition.Condition:=str1$
settings.stMethod.Method:=1
settings.Cols:="0|2|3";

The extracted result is shown in a new worksheet of the USMetropolita workbook.

XFunction Wextract3.png

Example 3: To extract the data from Column A whose row indices are contained in Column B.

Create a new workbook. Highlight Column A. Right-click on it and select Fill Column with: Normal Random Numbers from the short-cut menu. And fill column B with 2, 3, 5.

XFunction Wextract4.png

Make sure the workbook is active. Type the following script in the command window.

wextract iy:=col(A)
settings.stAlias.Cols:=1
settings.stAlias.AliasNames:=A
settings.stCondition.BeforeLoop:="j=1;"
settings.stCondition.BeforeIfCondition:="if (i==col(B)[j]) {temp=col(A)[i];j=j+1;}"
settings.stCondition.Condition:="A==temp"
settings.Cols:=0;

And the 2nd, 3rd, 5th rows in Column A are extracted to a new workbook.

XFunction Wextract5.png

 

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