# Issue with rms values for greenspline -Cn20+c+i **URL:** \ **Category:** Q&A\ **Created:** [November 29, 2023, 3:24pm UTC](https://forum.generic-mapping-tools.org/t/issue-with-rms-values-for-greenspline-cn20-c-i/4475 "2023-11-29T15:24:15Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Esteban82](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/esteban82/32/54_2.png) [@Esteban82](https://forum.generic-mapping-tools.org/u/Esteban82)\ **Post date:** [November 29, 2023, 3:24pm UTC](https://forum.generic-mapping-tools.org/t/issue-with-rms-values-for-greenspline-cn20-c-i/4475/1 "2023-11-29T15:24:15Z")
I remade the [animation 5](https://docs.generic-mapping-tools.org/dev/animations/anim05.html) but with this command ``` gmt greenspline geo.txt -Sc -Cn20+c+i -Ggeo.grd -Z2 -Emisfit.txt ``` This is the `misfit.txt` file. I notice that all the records have the same rms value (752.198173843). In the [animation](https://www.youtube.com/watch?v=7NQa4TORA3E&t=17s) I see that the values are changing. Is this a bug? ``` # Command : gmt greenspline geo.txt -Sc -Cn20 -Ggeo.grd -Z2 -Emisfit.txt -R-158/-156.9666666666667/18/19.66666666666667+I0.01666666666666667/0.01666666666666667 # eigenno eigenval var_percent rms 0 59177476.7 65.8905533939 752.198173843 1 37281370.3447 92.0418967819 752.198173843 2 19324372.0562 99.0681055505 752.198173843 3 6863523.97604 99.9544541832 752.198173843 4 1200156.86214 99.9815552443 752.198173843 5 641289.879832 99.9892930717 752.198173843 6 527868.265693 99.9945358486 752.198173843 7 390481.243194 99.997404717 752.198173843 8 214083.14701 99.9982670504 752.198173843 9 171116.511092 99.9988179775 752.198173843 10 142872.632768 99.9992020457 752.198173843 11 109407.162496 99.999427263 752.198173843 12 95358.8475819 99.999598356 752.198173843 13 69689.8562616 99.9996897357 752.198173843 14 58339.4126887 99.9997537732 752.198173843 15 54178.2469319 99.9998090013 752.198173843 16 45554.7853581 99.9998480474 752.198173843 17 36758.0204825 99.9998734697 752.198173843 18 34217.5598564 99.9998954994 752.198173843 19 31929.9545072 99.999914682 752.198173843 ``` ---
**Author:** ![pwessel](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/pwessel/32/30_2.png) [@pwessel](https://forum.generic-mapping-tools.org/u/pwessel)\ **Post date:** [November 29, 2023, 4:32pm UTC](https://forum.generic-mapping-tools.org/t/issue-with-rms-values-for-greenspline-cn20-c-i/4475/2 "2023-11-29T16:32:16Z")
Looking at it now. ---
**Author:** ![Esteban82](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/esteban82/32/54_2.png) [@Esteban82](https://forum.generic-mapping-tools.org/u/Esteban82)\ **Post date:** [November 29, 2023, 5:32pm UTC](https://forum.generic-mapping-tools.org/t/issue-with-rms-values-for-greenspline-cn20-c-i/4475/3 "2023-11-29T17:32:04Z")
For the record, fixed by [https://github.com/GenericMappingTools/gmt/pull/8109](https://github.com/GenericMappingTools/gmt/pull/8109). ---
**Author:** ![Esteban82](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/esteban82/32/54_2.png) [@Esteban82](https://forum.generic-mapping-tools.org/u/Esteban82)\ **Post date:** [November 29, 2023, 5:48pm UTC](https://forum.generic-mapping-tools.org/t/issue-with-rms-values-for-greenspline-cn20-c-i/4475/4 "2023-11-29T17:48:07Z")
BTW, @pwessel is it possible to select the range of grids that will be created? I am thinking on something like this to only see from the 100th grid to the end. ```auto gmt greenspline geo.txt -Sc -Cn100/"max"+c+i -Ggeo.grd -Z2 -Emisfit.txt ```