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| How can I enter a "null value" (a value that is ignored when gridding or performing mathematical calculations) into the Surfer worksheet? |
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Surfer ignores any text strings (non-numeric
values) when gridding and when performing Data | Transform in the
worksheet.
Any of the following can be used:
"-9999", N/A, "no data", x99
-
In a text editor, program, or script, add
quotes around a number to designate it as a text string. "-9999"
- In the
worksheet, insert a single quote (apostrophe) at the beginning of the
number to convert it to text. '-9999
Quotes around a text string with
spaces ensure that the entire string is read as a single item. A mix
of numbers and text without spaces is read as a text string.
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