Len - script and chart function
Len() returns the length of the input string.
Syntax:
Len(text)
Return data type: integer
Argument | Description |
---|---|
text | The string to evaluate. |
Example | Result |
---|---|
Len('Peter') | Returns 5 |
Example - Len fundamentals
Overview
Open the Data load editor and add the load script below to a new tab.
The load script contains:
-
A dataset which is loaded into a data table called Example.
-
One field in the data table called CustomerComment. The field contains the original text string to evaluate.
Load script
Example:
Load * inline [
CustomerComment
Please deliver after 5 PM.
Thank you for the quick service!
Can you add a gift wrap?
];
Results
Load the data and open a sheet. Create a new table and add this field as a dimension:
-
CustomerComment
Create the following measure:
-
=Len(CustomerComment)
CustomerComment | Len(CustomerComment) |
---|---|
Can you add a gift wrap? | 24 |
Please deliver after 5 PM. | 26 |
Thank you for the quick service! |
32 |
The output of the measure Len(CustomerComment) returns the length of the CustomerComment input string.
Example - Len scenario
Overview
This example analyzes customer feedback by looking at the length of each comment as an indicator of its depth or level of detail.
Open the Data load editor and add the load script below to a new tab.
The load script contains:
-
A dataset which is loaded into a data table called Example.
-
The following fields in the data table:
-
TicketID
-
Description
-
Load script
Example:
Load * inline [
TicketID, Description
1001, "I received the wrong product."
1002, "The package arrived damaged, and I would like a replacement."
1003, "I've been trying to reset my password for two days, and I haven't received an email."
1004, "My order status shows 'Delivered' but I have not received my package yet."
1005, "Is product XYZ available in size Large?"
1006, "I need help with an exchange for a faulty product, and I've attached photos."
];
Results
Load the data and open a sheet. Create a new table and add these fields as dimensions:
-
TicketID
-
Description
Create the following calculated dimension:
-
=If(Len(Description) < 30, 'Short',If(Len(Description) <= 50, 'Medium', 'Long')), to calculate and assign a category (Short, Medium, Long) to the ticket based on the length of the description.
TicketID | Description | If(Len(Description) < 30, 'Short',If(Len(Description) <= 50, 'Medium', 'Long')) |
---|---|---|
1001 | I received the wrong product. | Short |
1002 | The package arrived damaged, and I would like a replacement. | Long |
1003 |
I've been trying to reset my password for two days, and I haven't received an email. |
Long |
1004 | Is product XYZ available in size Large? | Medium |
1005 | My order status shows 'Delivered' but I have not received my package yet. | Long |
1006 | I need help with an exchange for a faulty product, and I've attached photos. | Long |
The output of the calculated dimension shows how you can use the Len function to categorize data by interpreting the length of text strings.
Example - Len scenario using string manipulation
Overview
Open the Data load editor and add the load script below to a new tab.
The load script contains:
-
A dataset which is loaded into a data table called Example.
-
One field in the data table called InputText.
Load script
Example:
Load * inline [
InputText
this is a sample text string
capitalize first letter only
];
Results
Load the data and open a sheet. Create a new table and add this field as a dimension:
-
InputText
Create the following calculated dimensions:
-
=Upper(Left(InputText,1)) , to convert the first letter of the text string to uppercase.
-
=Mid(InputText,Len(upper(Left(InputText,1)))+1), to remove the first letter from the text string.
-
=Upper(left(InputText,1)) & Mid(InputText,len(upper(left(InputText,1)))+1), to combine the output from the first calculated dimension with the output from the second calculated dimension.
InputText | Upper(Left(InputText,1)) | Mid(InputText,Len(upper(Left(InputText,1)))+1) | Upper(left(InputText,1)) & mid(InputText,len(upper(left(InputText,1)))+1) |
---|---|---|---|
this is a sample text string | T | his is a sample text string | This is a sample text string |
capitalize first letter only | C | apitalize first letter only | Capitalize first letter only |
In the first calculated dimension, the Upper and Left functions are combined to return the first letter of the InputText as uppercase. In the second calculated dimension, the Mid function uses the Len function to return a text string that removes the first character from InputText. The third calculated dimension combines the first and second calculated dimensions and returns the InputText string with an uppercase first character.
This example uses the same functions (Upper, Mid, and Len) as the chart expression scenario. The load script creates a new field, NewInputText, that returns the InputText with an uppercase first character.
Example:
Load InputText, First&Second as NewInputText;
Load *, mid(InputText,len(First)+1) as Second;
Load *, upper(left(InputText,1)) as First;
Load * inline [
InputText
this is a sample text string
capitalize first letter only ];
InputText | NewInputText |
---|---|
this is a sample text string | This is a sample text string |
capitalize first letter only | Capitalize first letter only |