1. walterf25

    B4J Question MQTT Delay Time

    Hi Everyone, I am working on a project where I have a raspberry pi 4B where I have a b4j app running which communicates with a 32 channel Analog to Digital Converter we designed and built at work, the communication is via I2C protocol, this part works very well as far as I have been able to...
  2. walterf25

    B4J Question B4J App Slow on Raspberry Pi 4

    Hi all, I am working on a project for work, basically I am attaching a DAQ (Data Acquisition System) we designed with 4 ADCs that communicate with raspberry pi over I2C communication protocol. This all seems to work fine so far, I am able to communicate with each of the ADCs and collect data...
  3. walterf25

    iOS Question Library creation issue

    Hi all, it's been a very long time I haven't done anything with B4i, I recently just renewed my license for both B4i and Apple developer, I decided to continue working on a library I had started working on a while back, I have set everything up, the library files have compiled just fine without...
  4. rgarnett1955

    Android Question xGraph - Treatment of NaN's

    Hi All, I have lots of real time data I use xGraph to display, however I run into trouble with missing data segments. I don't wish to fill them with a linear interpolation or some other trick, but rather to pad the missing data points with NaN. At the moment xGraph treats the NaN's as...
  5. rgarnett1955

    Android Question xGraph Class and b4xlib - Not siplaying line graph traces when Manual Scaling selected.

    Hi, Trying to use xGraph to display Power Line Voltage and frequency, but when I select manual scaling and provide the ranges the graphs don't display the lines. The cursors show the data points as I expect they get these from the y Value arrays. This is my function with test data: Private...
  6. M

    Android Question Draw two lines on graph.

    Please help. Why I can not draw lines by timer in this code. I am using this library:
  7. D

    Android Question Complex charts availability

    Hello everyone. I am in a project involved with a dashboard that shows charts and general info from a client and it will work with filters coming from a combobox maybe. I was wondering if someone has seen a graphic library that has features like the ones displayed here: I've found libraries...