# \#grid **URL:** https://forum.croco-ocean.org/tag/grid/13.md [Latest](https://forum.croco-ocean.org/latest.md) · [Categories](https://forum.croco-ocean.org/categories.md) · [Tags](https://forum.croco-ocean.org/tags.md) --- ## [Subject: Recommended RX0 limit for reducing spurious currents in a 4-km CROCO model](https://forum.croco-ocean.org/t/subject-recommended-rx0-limit-for-reducing-spurious-currents-in-a-4-km-croco-model/7705)
**Author:** [@AsishKsasidharan](https://forum.croco-ocean.org/u/AsishKsasidharan)\ **Replies:** 4\ **Last updated:** [October 23, 2026, 5:23am UTC](https://forum.croco-ocean.org/t/subject-recommended-rx0-limit-for-reducing-spurious-currents-in-a-4-km-croco-model/7705 "2026-10-23T05:23:31Z")
Dear colleagues, I am running a river-enabled CROCO simulation over the northern Indian Ocean domain of 8–24°N, 78–100°E. Model/grid details: CROCO horizontal grid: 545 × 365 rho-points vertical levels: 40 Approxima… --- ## [How use high resolution data for coastline?](https://forum.croco-ocean.org/t/how-use-high-resolution-data-for-coastline/353)
**Author:** [@javadi](https://forum.croco-ocean.org/u/javadi)\ **Replies:** 3\ **Last updated:** [March 27, 2026, 8:01am UTC](https://forum.croco-ocean.org/t/how-use-high-resolution-data-for-coastline/353 "2026-03-27T08:01:48Z")
Dear all I use Croco tools without problems. Now, I need better data for the coastline. This data does not work for me. How can do it? Which data should I download and replaced it(e.g Coastline.l.mat)? If everyone ha… --- ## [How change bathymetry data](https://forum.croco-ocean.org/t/how-change-bathymetry-data/195)
**Author:** [@javadi](https://forum.croco-ocean.org/u/javadi)\ **Replies:** 2\ **Last updated:** [October 9, 2024, 7:15am UTC](https://forum.croco-ocean.org/t/how-change-bathymetry-data/195 "2024-10-09T07:15:09Z")
Hi, I started making grid and I was going to use another bathymetry data Gebco compared to defined data in this model etopo2. To deal with this, I have replaced this data with etopo2 in Topo folder and tested many metho… --- ## [CreateBMG/BMGTOOLS](https://forum.croco-ocean.org/t/createbmg-bmgtools/503)
**Author:** [@jvmcgovern](https://forum.croco-ocean.org/u/jvmcgovern)\ **Replies:** 10\ **Last updated:** [January 12, 2024, 11:34am UTC](https://forum.croco-ocean.org/t/createbmg-bmgtools/503 "2024-01-12T11:34:27Z")
I have identified the IFREMER developed CreateBMG/BMGTOOLS packages that are mentioned in the CROCO manual. It seems from documentation online that they are freely distributed under license. Does anyone know how to acce… --- ## [Croco choked on ORCA (Nesting troubles)](https://forum.croco-ocean.org/t/croco-choked-on-orca-nesting-troubles/383)
**Author:** [@m-n-o](https://forum.croco-ocean.org/u/m-n-o)\ **Replies:** 0\ **Last updated:** [August 17, 2022, 2:14pm UTC](https://forum.croco-ocean.org/t/croco-choked-on-orca-nesting-troubles/383 "2022-08-17T14:14:48Z")
Hello, I’m trying to create a nested model domain via Croco nesting tool. My parent grid is ORCA025 and every time I load it, Matlab gives me the traceback: Error using + Arrays have incompatible sizes for this … --- ## [Brace indexing is not supported for variables of this type](https://forum.croco-ocean.org/t/brace-indexing-is-not-supported-for-variables-of-this-type/395)
**Author:** [@Salim](https://forum.croco-ocean.org/u/Salim)\ **Replies:** 0\ **Last updated:** [September 14, 2022, 12:02pm UTC](https://forum.croco-ocean.org/t/brace-indexing-is-not-supported-for-variables-of-this-type/395 "2022-09-14T12:02:40Z")
Hi All, I am just starting the toolbox and while trying .make\_grid’ it shows the error as below, I really dont understand…can you help me. Unable to perform assignment because brace indexing is not supported for varia… --- ## [How to determine the rivers coordinates in the model grid from the geographical coordinates](https://forum.croco-ocean.org/t/how-to-determine-the-rivers-coordinates-in-the-model-grid-from-the-geographical-coordinates/509)
**Author:** [@Bechir](https://forum.croco-ocean.org/u/Bechir)\ **Replies:** 2\ **Last updated:** [December 8, 2023, 3:02am UTC](https://forum.croco-ocean.org/t/how-to-determine-the-rivers-coordinates-in-the-model-grid-from-the-geographical-coordinates/509 "2023-12-08T03:02:53Z")
Dear CROCO-USERS, I have the geographical coordinates (lon, lat) of rivers, I would like to find the coordinates (nx, ny) in the model grid. How can I do it? Is there available script? I’m grateful for your help. --- ## [AGRIF - rotated child grid](https://forum.croco-ocean.org/t/agrif-rotated-child-grid/504)
**Author:** [@jvmcgovern](https://forum.croco-ocean.org/u/jvmcgovern)\ **Replies:** 0\ **Last updated:** [November 21, 2023, 12:59pm UTC](https://forum.croco-ocean.org/t/agrif-rotated-child-grid/504 "2023-11-21T12:59:35Z")
Hi all, I’m wondering is it workable to have a rotate child grid in a parent grid that is orientated north-south? Regards --- ## [CreateBMG/BMGTOOLS](https://forum.croco-ocean.org/t/createbmg-bmgtools/502)
**Author:** [@jvmcgovern](https://forum.croco-ocean.org/u/jvmcgovern)\ **Replies:** 0\ **Last updated:** [November 21, 2023, 11:21am UTC](https://forum.croco-ocean.org/t/createbmg-bmgtools/502 "2023-11-21T11:21:13Z")
I have identified the IFREMER developed CreateBMG/BMGTOOLS packages that are mentioned in the CROCO manual. It seems from documentation online that they are freely distributed under license. Does anyone know how to acce… --- ## [Why do these irregularities appear in the trench?](https://forum.croco-ocean.org/t/why-do-these-irregularities-appear-in-the-trench/497)
**Author:** [@EricLSM](https://forum.croco-ocean.org/u/EricLSM)\ **Replies:** 1\ **Last updated:** [November 6, 2023, 9:41pm UTC](https://forum.croco-ocean.org/t/why-do-these-irregularities-appear-in-the-trench/497 "2023-11-06T21:41:42Z")
Hello all. I’m checking the trench smoothing in a nested grid. I don’t know way I obtain, consistently at different latitudes and only in the nested grid, some irregularities in the trench as seen in the figure attached … --- ## [Feedback on my GDM model](https://forum.croco-ocean.org/t/feedback-on-my-gdm-model/462)
**Author:** [@cesar90](https://forum.croco-ocean.org/u/cesar90)\ **Replies:** 1\ **Last updated:** [June 2, 2023, 5:36am UTC](https://forum.croco-ocean.org/t/feedback-on-my-gdm-model/462 "2023-06-02T05:36:43Z")
Dear CROCO community, best regards. I have been working on my model for the GDM. I can’t get the SSH and Loop Current (LC) simulated by my model to fit better based on satellite data. I have changed my parameters for ho… --- ## [Edit bathymetry 2](https://forum.croco-ocean.org/t/edit-bathymetry-2/399)
**Author:** [@alonso](https://forum.croco-ocean.org/u/alonso)\ **Replies:** 1\ **Last updated:** [October 7, 2022, 7:54pm UTC](https://forum.croco-ocean.org/t/edit-bathymetry-2/399 "2022-10-07T19:54:52Z")
I’m processing tidal current, but I’m not sure how to transform from s\_rho (‘S-coordinate at RHO-points’) to meters , is there some tools in crocotools for that? --- ## [Edit bathymetry](https://forum.croco-ocean.org/t/edit-bathymetry/386)
**Author:** [@alonso](https://forum.croco-ocean.org/u/alonso)\ **Replies:** 1\ **Last updated:** [September 2, 2022, 12:24pm UTC](https://forum.croco-ocean.org/t/edit-bathymetry/386 "2022-09-02T12:24:03Z")
Is there some way to edit the bathymetry ?, Something like editmask in crocotools(matlab) but with the bathymetry? Thanks so much --- ## [Error with Easy interactive grid maker in make\_grid](https://forum.croco-ocean.org/t/error-with-easy-interactive-grid-maker-in-make-grid/349)
**Author:** [@JamesIbro](https://forum.croco-ocean.org/u/JamesIbro)\ **Replies:** 2\ **Last updated:** [April 19, 2022, 7:47am UTC](https://forum.croco-ocean.org/t/error-with-easy-interactive-grid-maker-in-make-grid/349 "2022-04-19T07:47:56Z")
Dear CROCO users, During the process of making the grid using make\_grid function, I choose yes for the question within the process below: Do you want to use interactive grid maker? (e.g., for grid rotation or paramete… --- ## [Crocotools in python?](https://forum.croco-ocean.org/t/crocotools-in-python/92)
**Author:** [@AndresSepulveda](https://forum.croco-ocean.org/u/AndresSepulveda)\ **Replies:** 2\ **Last updated:** [February 11, 2021, 6:03am UTC](https://forum.croco-ocean.org/t/crocotools-in-python/92 "2021-02-11T06:03:12Z")
Hi all, We are short of Matlab licences, so we are seriously thinking in porting the crocotools code to python (probably paying a programmer here in Chile, it is hard to transfer money abroad). Before reinventing the … --- ## [Rotated grids in Croco tools](https://forum.croco-ocean.org/t/rotated-grids-in-croco-tools/129)
**Author:** [@nvogtvincent](https://forum.croco-ocean.org/u/nvogtvincent)\ **Replies:** 2\ **Last updated:** [August 6, 2019, 10:18am UTC](https://forum.croco-ocean.org/t/rotated-grids-in-croco-tools/129 "2019-08-06T10:18:29Z")
Is there currently any capability (or workaround) to use rotated grids (i.e. not parallel to lat-lon lines) in Croco tools? I can’t find any obvious way of doing this, but I was wondering if anybody had found a workaroun… --- ## [Loading a mask into croco tools](https://forum.croco-ocean.org/t/loading-a-mask-into-croco-tools/124)
**Author:** [@nvogtvincent](https://forum.croco-ocean.org/u/nvogtvincent)\ **Replies:** 4\ **Last updated:** [August 5, 2019, 8:25am UTC](https://forum.croco-ocean.org/t/loading-a-mask-into-croco-tools/124 "2019-08-05T08:25:07Z")
Is there an existing way to load a mask you’ve already manually produced (e.g. in the mask editor) back into the mask editor? --- ## [Size limit for clm file?](https://forum.croco-ocean.org/t/size-limit-for-clm-file/68)
**Author:** [@Bertrand\_Delorme](https://forum.croco-ocean.org/u/Bertrand_Delorme)\ **Replies:** 1\ **Last updated:** [March 1, 2019, 9:58am UTC](https://forum.croco-ocean.org/t/size-limit-for-clm-file/68 "2019-03-01T09:58:45Z")
Hi all, I am using the crocotools routine to create 3D clm file for a simulation. When I call the create\_climfile.m routine with a high resolution I got an error message from the netcdf package (in crocotools also) sayi…