Chart component

Peter · September 22, 2022, 5:14pm

Stress testing the new Chart component that was just released in nb190.

Clock is set at 100 milliseconds.

you can drag and drop the blocks in your block editor to test.

line works
scatter crashes the companion and APK.
area works
bar works
pie works

Anybody has the same issue with the scatter type chart?

Peter · September 22, 2022, 5:30pm

I have this block in the Chart component.

But you can only set the Chart Type in the designer, so this block is not necessary. It can only confuse users.

ABG · September 22, 2022, 6:25pm

Confirmed on the scatter chart crash after maybe a dozen points added, one per second.
chart_scatter_random.aia (4.1 KB)

Also, I had to side load (drag and drop from a downloaded .apk) the 2.65u Companion .apk into the new MIT emulator. The 2.64 Companion did not notice the new version and did not try to update itself.

Expect a screenful of Java error messages for any one running new components (Sheets, Charts) in the 2.64 Companion.

Taifun · September 22, 2022, 7:02pm

the question is: why is it not possible to set the type in the blocks?
or: the Type property is missing in the blocks...

Taifun

Peter · September 23, 2022, 1:40am

Thats true. Even the documentation says it can only be done from the designer.

Peter · September 24, 2022, 5:24am

github.com/mit-cml/appinventor-sources

Chart component Scatter type is crashing companion and apk.

opened 05:24AM - 24 Sep 22 UTC

PeterMathijssen

bug status: new

**Describe the bug** Chart component Scatter type is crashing companion and a…pk.  **Affects**  - [ ] Designer - [ ] Blocks editor - [X] Companion - [X] Compiled apps - [ ] Buildserver - [ ] Debugging - [X] Chart component **Expected behavior** Like all other Chart types the Scatter type shouldn't crash the companion of apk.  **Steps to reproduce** Use these blocks with the scatter type of the Chart component ![image](https://user-images.githubusercontent.com/32273650/192081383-18b25571-5c66-4cdc-8647-510b34096d9b.png) https://community.appinventor.mit.edu/t/chart-component/66097

github.com/mit-cml/appinventor-sources

Chart type should be set with blocks

opened 05:28AM - 24 Sep 22 UTC

PeterMathijssen

status: new feature request

**Describe the desired feature** You should be able to set the Chart type wit…h blocks. At the moment it is only possible in the designer. There is already a Char type block. ![image](https://user-images.githubusercontent.com/32273650/192081520-ab380e56-c19b-4a68-bea6-d4e415d253c3.png)  **Give an example of how this feature would be used** This way you could present different views from the same or different data set from within the apk. Now you have to use multiple Chart components to make it work.  **Why doesn't the current App Inventor system address this use case?** You can only set the Chart type from the designer not from blocks.  **Why is this feature beneficial to App Inventor's educational mission?** It would make the possibility of using different Chart types less complicated for users.