2.2.3.62 wreducerows

Contents

Menu Information

Reduce Rows

Brief Information

Reduce worksheet by merging or deleting rows

Additional Information

Minimum Origin Version Required: 9.1 SR0

Command Line Usage

1. wreducerows method:=merge nrows:=3 merge:=ave start:=2;

2. wreducerows method:=hidden;

X-Function Execution Options

Please refer to the page for additional option switches when accessing the x-function from script

Variables

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

Input

Range

<active>
 Specifies the input data range.
Reduce Method method

Input

int

0
 Specifies the reduce method.

Option list:

  • 0=del:Delete N rows, then skip M rows
Delete N rows, then skip M rows
  • 1=missing:Delete rows with missing values
Delete the rows with missing values
  • 2=mask:Delete rows with masked values
Delete the rows with masked values
  • 3=merge:Reduce N rows with merged values
Merge every N data points into one data point with specified value.
  • 4=hidden:Delete hidden rows
Delete hidden rows (e.g. filter out data)
Delete Entire Row entire

Input

int

0
 Specifies to reduce rows by deleting whole row based on missing or masked value in reference column.

This option is only available when Reduce Method is Delete rows with missing values (method=missing) or Delete rows with masked values (method=merge). And the variable irng is Reference Column

Option list:

  • 0=false
  • 1=true
Merge/Delete Rows nrows

Input

int

2
 Specifies how many rows to merge or delete. This option is only available when selecting Delete N rows, then skip M rows or Reduce N rows with merged values as Reduce Method.
Skip Rows skip

Input

int

1
 Specifies how many rows to skip. This option is only available when selecting Delete N rows, then skip M rows as Reduce Method.
Merge by merge

Input

int

0
 Specifies the value to replace the merged data points. This option is only available when selecting Reduce N rows with merged values as Reduce Method.

Option list:

  • 0=first:First Point
Replaces N data points with the first value of these datapoints.
  • 1=last:Last Point
Replaces N data points with the last value of these datapoints.
  • 2=ave:Average
Replaces N data points with the average value of these data points.
  • 3=min:Min
Replaces N data points with the minimum value of these data points.
  • 4=max:Max
Replaces N data points with the maximum value of these data points.
  • 5=sum:Sum
Replaces N data points with the sum of these data points.
  • 6=sd:SD
Replaces N data points with the standard deviation of these data points.
Starting Row to Merge/Delete start

Input

int

1
 Specifies the starting row to merge/delete.
End Row to Merge/Delete end

Input

int

-1
 Specifies the end row to merge/delete. Script accessible only.
Output orng

Output

Range

<input>
 Specifies the output range.

Description

This X-Function is used to delete rows or merge rows with specified statistics data. See also here.

Example

Example 1

  1. Create a new workbook and import the Origin sample data Gaussian Envelope.DAT which is located in <Origin Program Folder> \Samples\Signal Processing.
  2. Highlight all columns, select menu item Worksheet: Reduce Rows to open wreducerows X-Function dialog. Set the options as below:
    Reduce Method: Reduce N rows with merged values
    Merge Rows: 10
    Merge by: First Point
    Starting Row to Merge: 1
    Output: <new>
  3. Click OK to merge the rows.


Example 2

Suppose we have a worksheet data. We want to keep rows where col(B)'s value is bigger than 5000 and delete the rest. Run codes below: 

//add a filter to col(B) and hide all rows <5000
wks.col2.filter = 1;
wks.col2.filter$="x>5000";
wks.runfilter();
wks.col2.filter=0;
//delete hidden rows
wreducerows method:=hidden;

Related X-Functions

reducerows, wdelrows

Keywords:data reduction