What is the maximum number of data points I can import/grid in Surfer?

There is no maximum size for the number of points to import into Surfer. It depends on what you are trying to do and the amount of RAM you have. The more data points you have, the more RAM you will need.


The Surfer worksheet supports up to 1 billion rows by 1 billion columns. Your computer will run out of memory before you can import that many data points.


If you want to find out how many data points you can grid, you can estimate how much RAM you will need (in bytes) by multiplying the number of data points you have by 400. Surfer requires up to 400 bytes of memory for each XYZ data point when gridding. So if you have a 400,000 point data file, you will need 400,000 x 400 = 160,000,000 bytes of free memory (or 160 MB).


If you are running out of available memory when you are trying to grid a data set, please see the article: Why do I get an "insufficient memory to perform operation" error when gridding data in Surfer?


Updated October 29, 2018

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  • 0
    Ankhbayar Majaa


    I have the error during i import the point cloud (XYZ) data. This data has over 10 million point. And i have the pc 32 GB memory.

    But i have got still the this error "insufficient memory".

    I have Surfer 9. (do i need a update or should i change a settings some where)

    Can anyone help me?

  • 0
    Katie Yoder

    Surfer 9 is a 32-bit program so it cannot take full advantage of the additional memory available on 64-bit systems.  As a 32-bit program, it is limited to a maximum of 2 GB of memory (half the maximum of 4GB allowed for 32-bit operating systems). 

    I would recommend upgrading to Surfer 14 to take full advantage of your computer's processing power.  Download the free trial to test the improved processing and all of the new features!


  • 0
    Ankhbayar Majaa

    thanks Katie

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