# How to use append method to stc？ **URL:** \ **Category:** Support & Discussions\ **Created:** [June 14, 2021, 10:25am UTC](https://mne.discourse.group/t/how-to-use-append-method-to-stc/3254 "2021-06-14T10:25:30Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Xiaofang](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/xiaofang/32/265_2.png) [@Xiaofang](https://mne.discourse.group/u/Xiaofang)\ **Post date:** [June 14, 2021, 10:25am UTC](https://mne.discourse.group/t/how-to-use-append-method-to-stc/3254/1 "2021-06-14T10:25:30Z")
I want to splice 8 stc together, but the add method of sourceEstimate is to sum the values. Is there any way to append one stc to another stc? ---
**Author:** ![mainakjas](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/mainakjas/32/34_2.png) [@mainakjas](https://mne.discourse.group/u/mainakjas)\ **Post date:** [June 14, 2021, 7:28pm UTC](https://mne.discourse.group/t/how-to-use-append-method-to-stc/3254/2 "2021-06-14T19:28:57Z")
You could use the constructor of the object: [https://mne.tools/stable/generated/mne.SourceEstimate.html#mne.SourceEstimate](https://mne.tools/stable/generated/mne.SourceEstimate.html#mne.SourceEstimate) Just concatenate stc.data using numpy and create a new SourceEstimate object. Hope that helps, Mainak ---
**Author:** ![Xiaofang](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/xiaofang/32/265_2.png) [@Xiaofang](https://mne.discourse.group/u/Xiaofang)\ **Post date:** [June 15, 2021, 1:21am UTC](https://mne.discourse.group/t/how-to-use-append-method-to-stc/3254/3 "2021-06-15T01:21:47Z")
ok，i will take the idea, Okay, I will try this method. I thought about it before, but I didn’t implement it because I was afraid of some unknown errors. Since you said yes, I can do it with confidence. Thank you very much for your reply.