# Chap & Modeling **URL:** https://community.dhis2.org/c/development/chap/84.md [Latest](https://community.dhis2.org/latest.md) · [Categories](https://community.dhis2.org/categories.md) · [Tags](https://community.dhis2.org/tags.md) --- ## [About the Chap & Modeling category](https://community.dhis2.org/t/about-the-chap-modeling-category/61403)
**Author:** [@maxk](https://community.dhis2.org/u/maxk)\ **Replies:** 0\ **Last updated:** [2 October 2024 17:09 UTC](https://community.dhis2.org/t/about-the-chap-modeling-category/61403 "2024-10-02T17:09:05Z")
This category is for discussing the Chap Modeling Platform and other tools and approaches for predictive modeling and climate-sensitive disease forecasting in DHIS2. Chap Modeling Platform is a collaborative and open pl… --- ## [Open-source WHO DQR-style data quality checks at scale: DHIS2 → data lake → PySpark (feedback welcome)](https://community.dhis2.org/t/open-source-who-dqr-style-data-quality-checks-at-scale-dhis2-data-lake-pyspark-feedback-welcome/77306)
**Author:** [@kwenevsteve](https://community.dhis2.org/u/kwenevsteve)\ **Replies:** 1\ **Last updated:** [9 October 2026 10:09 UTC](https://community.dhis2.org/t/open-source-who-dqr-style-data-quality-checks-at-scale-dhis2-data-lake-pyspark-feedback-welcome/77306 "2026-10-09T10:09:05Z")
Hi everyone, I’ve been building an open-source project that runs WHO Data Quality Review–style checks on DHIS2 aggregate data outside DHIS2, so they can run at scale on a schedule and feed other tools. I’d love feedback from this community. How it works Extracts data values and metadata through the Web API (dataVa… --- ## [About CHAP Modelling--OneTime Variables in CHAP](https://community.dhis2.org/t/about-chap-modelling-onetime-variables-in-chap/77064)
**Author:** [@krish\_sharma](https://community.dhis2.org/u/krish_sharma)\ **Replies:** 2\ **Last updated:** [25 September 2026 08:27 UTC](https://community.dhis2.org/t/about-chap-modelling-onetime-variables-in-chap/77064 "2026-09-25T08:27:19Z")
For variables such as population and other indicators that are available only once for several years rather than monthly, we currently repeat the available value across all months to create a monthly model. Is there a way in CHAP Model to use these annual one-time variables directly without repeating them for every mon… --- ## [Chap and modeling app user survey](https://community.dhis2.org/t/chap-and-modeling-app-user-survey/76659)
**Author:** [@ivargry](https://community.dhis2.org/u/ivargry)\ **Replies:** 1\ **Last updated:** [10 September 2026 18:17 UTC](https://community.dhis2.org/t/chap-and-modeling-app-user-survey/76659 "2026-09-10T18:17:43Z")
We have created a survey for users of chap and the Modeling app, and we hope that relevant people here will fill it out. The feedback is very valuable to us and will help us decide what to focus on going forward. The survey is relevant to anyone who uses chap or the Modeling app, or who is in any way involved in imple… --- ## [CHAP Modeling Sierra Leone Instance](https://community.dhis2.org/t/chap-modeling-sierra-leone-instance/75444)
**Author:** [@Lincoln\_Chivhinge](https://community.dhis2.org/u/Lincoln_Chivhinge)\ **Replies:** 18\ **Last updated:** [26 August 2026 11:20 UTC](https://community.dhis2.org/t/chap-modeling-sierra-leone-instance/75444 "2026-08-26T11:20:52Z")
I’m running a local DHIS2 instance (Sierra Leone demo, Docker Compose) with Chap Core set up as a separate container, connected via a Route pointing to http://host.docker.internal:8000/\\\*\\\*, but I’m unable to access the CHAP modeling functionality through the Prediction/Modeling App. Has anyone encountered this specifi… --- ## [Admin user has no permissions to configure routes for the CHAP on play](https://community.dhis2.org/t/admin-user-has-no-permissions-to-configure-routes-for-the-chap-on-play/75445)
**Author:** [@micnice](https://community.dhis2.org/u/micnice)\ **Replies:** 4\ **Last updated:** [28 July 2026 08:18 UTC](https://community.dhis2.org/t/admin-user-has-no-permissions-to-configure-routes-for-the-chap-on-play/75445 "2026-07-28T08:18:51Z")
It seems the common admin user \[admin:district\] has no permission to configure routes on DHIS2 Play I am setting up a local CHAP instance and i would like to connect it to play. Let me know if I am missing something Any help is appreciated cc: @gassim --- ## [Modeling App Questions](https://community.dhis2.org/t/modeling-app-questions/71278)
**Author:** [@Reanne.Jean](https://community.dhis2.org/u/Reanne.Jean)\ **Replies:** 6\ **Last updated:** [30 June 2026 13:27 UTC](https://community.dhis2.org/t/modeling-app-questions/71278 "2026-06-30T13:27:27Z")
Hello community! My team is currently exploring the use of the Modeling app. We have a few questions related to data modeling, configuration, and best practices, and would appreciate your guidance: Is there a standar… --- ## [New version of the Modeling app (4.0.0) and Chap (1.2.0)](https://community.dhis2.org/t/new-version-of-the-modeling-app-4-0-0-and-chap-1-2-0/70842)
**Author:** [@jen.jones.arnesen](https://community.dhis2.org/u/jen.jones.arnesen)\ **Replies:** 0\ **Last updated:** [5 March 2026 10:53 UTC](https://community.dhis2.org/t/new-version-of-the-modeling-app-4-0-0-and-chap-1-2-0/70842 "2026-03-05T10:53:46Z")
We are pleased to release a new version of Chap (v1.2.0) and the Modeling app (v4.0.0). This update includes numerous bug fixes, performance improvements, and new functionality developed over the past three months. Note that Chap and the Modeling app are both still in beta. They are both under active development and t… --- ## [Chap evaluate issue](https://community.dhis2.org/t/chap-evaluate-issue/69555)
**Author:** [@DAGBEMAMBOU](https://community.dhis2.org/u/DAGBEMAMBOU)\ **Replies:** 14\ **Last updated:** [25 February 2026 12:12 UTC](https://community.dhis2.org/t/chap-evaluate-issue/69555 "2026-02-25T12:12:08Z")
Hi everyone. I’d successfuly installed chap-core on my local Ubuntu machine. Still, when I ran the following chap evaluate command in its terminal, it returned an error: chap evaluate --model-name D:/chap\_training/min… --- ## [Modeling App Issue: ValueError: No data in dataset DataSet({})](https://community.dhis2.org/t/modeling-app-issue-valueerror-no-data-in-dataset-dataset/70442)
**Author:** [@Reanne.Jean](https://community.dhis2.org/u/Reanne.Jean)\ **Replies:** 7\ **Last updated:** [20 February 2026 08:27 UTC](https://community.dhis2.org/t/modeling-app-issue-valueerror-no-data-in-dataset-dataset/70442 "2026-02-20T08:27:16Z")
Good day I am experiencing a persistent issue with the DHIS2 (v2.41.4.2) Modeling App (v 3.1.1) where jobs fail during execution despite passing validation and dry run checks. I attached a google drive link of a screen … --- ## [\`chap validate\` command not working](https://community.dhis2.org/t/chap-validate-command-not-working/70477)
**Author:** [@JeanKouss](https://community.dhis2.org/u/JeanKouss)\ **Replies:** 2\ **Last updated:** [16 February 2026 17:32 UTC](https://community.dhis2.org/t/chap-validate-command-not-working/70477 "2026-02-16T17:32:17Z")
Hi! In chap documentation, there is a command to check if a csv dataset file is chap compliant : Data Formats - DHIS2 Modeling But when I run it, here is the output I get : \>\>\> chap validate --dataset datasets/malaria… --- ## [Continuation of the webinar series](https://community.dhis2.org/t/continuation-of-the-webinar-series/70462)
**Author:** [@DAGBEMAMBOU](https://community.dhis2.org/u/DAGBEMAMBOU)\ **Replies:** 2\ **Last updated:** [16 February 2026 10:05 UTC](https://community.dhis2.org/t/continuation-of-the-webinar-series/70462 "2026-02-16T10:05:27Z")
Hi everyone. On Feb 11, 2026, I did not receive a Zoom link for the scheduled webinar. Could someone kindly provide an update on the continuation of the webinar series? Thanks in advance. Amal --- ## [Permission denief during homework for webinar 3](https://community.dhis2.org/t/permission-denief-during-homework-for-webinar-3/69653)
**Author:** [@Gera](https://community.dhis2.org/u/Gera)\ **Replies:** 0\ **Last updated:** [20 January 2026 14:07 UTC](https://community.dhis2.org/t/permission-denief-during-homework-for-webinar-3/69653 "2026-01-20T14:07:15Z")
How can I get permission? --- ## [DHIS2 Modelling app - Jobs screen error: "Oops! Sorry an unexpected error has occurred."](https://community.dhis2.org/t/dhis2-modelling-app-jobs-screen-error-oops-sorry-an-unexpected-error-has-occurred/69568)
**Author:** [@Kotomangazafy\_Stepha](https://community.dhis2.org/u/Kotomangazafy_Stepha)\ **Replies:** 1\ **Last updated:** [16 January 2026 09:15 UTC](https://community.dhis2.org/t/dhis2-modelling-app-jobs-screen-error-oops-sorry-an-unexpected-error-has-occurred/69568 "2026-01-16T09:15:51Z")
--- ## [Running your first model with Chap (webinar series #3 thread)](https://community.dhis2.org/t/running-your-first-model-with-chap-webinar-series-3-thread/69513)
**Author:** [@gsandve](https://community.dhis2.org/u/gsandve)\ **Replies:** 0\ **Last updated:** [13 January 2026 07:22 UTC](https://community.dhis2.org/t/running-your-first-model-with-chap-webinar-series-3-thread/69513 "2026-01-13T07:22:54Z")
Please ask any question you have connected to running models with Chap - any issues with installing Chap, getting a first model to work, how things work behind the scenes, what specific opportunities this can bring etc. --- ## [Recommended Chap-core installation for the workshop](https://community.dhis2.org/t/recommended-chap-core-installation-for-the-workshop/69460)
**Author:** [@DAGBEMAMBOU](https://community.dhis2.org/u/DAGBEMAMBOU)\ **Replies:** 2\ **Last updated:** [10 January 2026 13:26 UTC](https://community.dhis2.org/t/recommended-chap-core-installation-for-the-workshop/69460 "2026-01-10T13:26:21Z")
Hi everyone Could someone let me know which one of the following installations of Chap-core would be recommended for the workshop? 1- installation to just run models locally 2- installation to run the modelling App (u… --- ## [GCC error while installing chap-core on Windows 10](https://community.dhis2.org/t/gcc-error-while-installing-chap-core-on-windows-10/69409)
**Author:** [@DAGBEMAMBOU](https://community.dhis2.org/u/DAGBEMAMBOU)\ **Replies:** 2\ **Last updated:** [7 January 2026 23:39 UTC](https://community.dhis2.org/t/gcc-error-while-installing-chap-core-on-windows-10/69409 "2026-01-07T23:39:49Z")
Hi everyone. I was attempting to install chap-core on my Windows Laptop; unfortunately, the installation failled and I received the attached error message. Thanks in advance for any help to fix this. Regards, DAG… --- ## [Working efficiently with codebases (webinar series #2 thread)](https://community.dhis2.org/t/working-efficiently-with-codebases-webinar-series-2-thread/69414)
**Author:** [@gsandve](https://community.dhis2.org/u/gsandve)\ **Replies:** 1\ **Last updated:** [7 January 2026 12:44 UTC](https://community.dhis2.org/t/working-efficiently-with-codebases-webinar-series-2-thread/69414 "2026-01-07T12:44:43Z")
This is a discussion thread for Webinar series #2 on Working efficiently with codebases. Please post any comments or questions you have during the webinar or while working with the web material afterwards here. The material is available here: --- ## [Seeking mentors and collaborators for DHIS2 and climate health modelling using CHAP](https://community.dhis2.org/t/seeking-mentors-and-collaborators-for-dhis2-and-climate-health-modelling-using-chap/69127)
**Author:** [@mzeefilexy](https://community.dhis2.org/u/mzeefilexy)\ **Replies:** 3\ **Last updated:** [23 December 2025 16:49 UTC](https://community.dhis2.org/t/seeking-mentors-and-collaborators-for-dhis2-and-climate-health-modelling-using-chap/69127 "2025-12-23T16:49:17Z")
Hello DHIS2 Community, I am Felix Oluoch, PhD, Postdoctoral Fellow, Department of Population Health and Institute for Global Health and Development (IGHD), Aga Khan University, Nairobi, Kenya. I am looking for internat… --- ## [New video: DHIS2 Modeling App & Chap](https://community.dhis2.org/t/new-video-dhis2-modeling-app-chap/68877)
**Author:** [@maxk](https://community.dhis2.org/u/maxk)\ **Replies:** 0\ **Last updated:** [1 December 2025 15:08 UTC](https://community.dhis2.org/t/new-video-dhis2-modeling-app-chap/68877 "2025-12-01T15:08:46Z")
We’re happy to share a new 5-minute video that demonstrates how you can use the DHIS2 Modeling App & Chap platform for predictive modeling and forecasting of climate-sensitive disease forecasting in DHIS2: Please feel … --- ## [New version of the Modeling app and chap (v3.0.0/v1.1.0)](https://community.dhis2.org/t/new-version-of-the-modeling-app-and-chap-v3-0-0-v1-1-0/68415)
**Author:** [@ivargry](https://community.dhis2.org/u/ivargry)\ **Replies:** 0\ **Last updated:** [3 November 2025 14:16 UTC](https://community.dhis2.org/t/new-version-of-the-modeling-app-and-chap-v3-0-0-v1-1-0/68415 "2025-11-03T14:16:26Z")
We are pleased to release a new version of chap-core (v1.1.0) together with a new version of the Modeling App (v3.0.0). This joint update includes numerous bug fixes, performance improvements, and new functionality devel… --- ## [Is Climate app available for Pakistan Chapter as well, with data sources in Pakistan context](https://community.dhis2.org/t/is-climate-app-available-for-pakistan-chapter-as-well-with-data-sources-in-pakistan-context/66126)
**Author:** [@jibranchohan](https://community.dhis2.org/u/jibranchohan)\ **Replies:** 1\ **Last updated:** [11 June 2025 13:46 UTC](https://community.dhis2.org/t/is-climate-app-available-for-pakistan-chapter-as-well-with-data-sources-in-pakistan-context/66126 "2025-06-11T13:46:52Z")
We are using DHIS-2 in Pakistan for Malaria for the last 5 years, and we do stratification every other year, as well as the ITN campaigns. I think this would be useful for us, but again, the data sources are a big questi…