reduce - Yagisanatode

Google Apps Script: V8 engine, map, filter, reduce, includes, 2d arrays, matrix

Have you ever wanted to delete or add columns in a Google Sheet, based on another set of Sheet data?

I know I have.

There have been a number of instances where I wanted to insert new columns or removed unused columns in large Google Sheets projects with Google Apps Script.

In the past, I have dynamically set headers based on something like an IMPORTRANGE or FILTER, or simply from an array ({}) from another sheet tab or Google Sheet. However, when I update the original data the headers change but all the data underneath them does not move along to the updated column with it.

Now all my data is not lined up with the header! As you can imagine, this creates some serious problems.

In this tutorial, we’ll show you how to use Google Apps Script to update your headers based on another sheets values. These sheets values can come from the current Google Sheet workbook or another one. We will also ensure that the data below the headers is migrated along with the new header location.

Take a look at the visual example below:

As always, read as much or as little as you need to get the job done or learn the skill.

Continue reading “Google Apps Script: Add and removed Google Sheets columns based on a search array”

Google Apps Script, Google Sheets

Have you ever experienced this warning error when trying to set values or paste a range of values back into your Google Sheet with Google Apps Script?

The number of columns in the data does not match the number of columns in the range. The data has 6 but the range has 9. (line 52, file “test”)

Yeap. One of your row lengths is not as long as the width of the column range you set.

This generally occurs when you are manipulating data into a new format before setting it back into your Google Sheet.

Let’s look like some dodgy data I’ve prepared that I want to paste or set backing my spreadsheet.

var dodgy2dArray = [
  [1,2,3,4,5,6],
  [1,2,3,4,5,6,7,8,9],
  [1,2,3,4,5,6],
  [1,2,3],
  [1,2,3,4,5,6,7,8],
  [1,2,3,4,5,6,7,8,9],
  [1]
];

var dodgy2dArray = [

[1,2,3,4,5,6],

[1,2,3,4,5,6,7,8,9],

[1,2,3,4,5,6],

[1,2,3],

[1,2,3,4,5,6,7,8],

[1,2,3,4,5,6,7,8,9],

[1]

];

As you can see, I’ve got a 2d array for data with 7 rows and with a max row width of 9. This means our data will extend to nine columns at its max.

Now, your first instinct might be that if I take a few chips out of square peg, it should still fit into a square hole. I mean, I’m only subtracting from the square, right?

Then you go off blazing a path through the code, hoody hanging low over your head, punching away at your bespoke mechanical keyboard.

function stoopid(){
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var sheet = ss.getActiveSheet();
  var range = sheet.getRange(1,1,7,9);
  range.setValues(dodgy2dArray);
};

function stoopid(){

var ss = SpreadsheetApp.getActiveSpreadsheet();

var sheet = ss.getActiveSheet();

var range = sheet.getRange(1,1,7,9);

range.setValues(dodgy2dArray);

};

With victory within your grasp, you hit run and your world comes crashing down.

The Solution

Continue reading “Google Apps Script: Filling out your column data to match the number of columns in a range”

Tag: reduce

Google Apps Script: Add and removed Google Sheets columns based on a search array

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Google Apps Script: Filling out your column data to match the number of columns in a range

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