# developing new node **URL:** \ **Category:** Node Development\ **Created:** [February 23, 2013, 7:32pm UTC](https://forum.knime.com/t/developing-new-node/2658 "2013-02-23T19:32:18Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![archanaa](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/a/57b2e6/32.png) [@archanaa](https://forum.knime.com/u/archanaa)\ **Post date:** [February 23, 2013, 7:32pm UTC](https://forum.knime.com/t/developing-new-node/2658/1 "2013-02-23T19:32:18Z")
Hi i want to create a node by myself for a practice so i thought of creating meta node that wil read a excel file performs a mean operation and displays output.My problem is i dono how to get output from csv reader, to perform mean operation can anyone help  me please.     Regards, Archanaa ---
**Author:** ![swebb](https://forum-cdn.knime.com/user_avatar/forum.knime.com/swebb/32/369_2.png) [@swebb](https://forum.knime.com/u/swebb)\ **Post date:** [February 24, 2013, 4:53pm UTC](https://forum.knime.com/t/developing-new-node/2658/2 "2013-02-24T16:53:25Z")
Hi Archanaa You want to get the mean from all the values in a column? I think the statistics node can do this as can the group node.    Are you making a new version of the CSV reader and wan't it to output the results of the mean in addition to the data? If so you would need to identify a specific column, or every int/double column to act upon. I would sum the cell value for said columns as they were read and then divide by the number of rows in the table giving the mean.   Regards   Sam   ---
**Author:** ![system](https://forum-cdn.knime.com/uploads/default/original/1X/ab3ccf34482a0329361734a18199390177204f15.png) [@system](https://forum.knime.com/u/system)\ **Post date:** [June 23, 2023, 8:18pm UTC](https://forum.knime.com/t/developing-new-node/2658/3 "2023-06-23T20:18:08Z")