ISSUE: rangey issues about circuitpython_uplot

[jposada202020]

Hello, Nothing that I could see so far. Could you share some date from sensor.historic_data_temperature, That would facilitate the testing and we will have the same values. Thanks :)

[casainho]

I do not have that values. But basically, the first graph in temperature and the other humidity. The list of values on the graph are initial very few values with similar values as seen in text / numeric values. The rest of values are all '0'.

Why would the graph not show the line on the '0' values, when I define a rangey value?

[casainho]

I need to set rangy for first graph to [0 - 50] that is temperature and [0 - 100] that is humidity. How should I do it, can you please suggest and I will do it?

This is the graph with real values, but automatic Y range... on the last points / 30 minutes, I did open the door and so the temperature decreased and humidity increased, that is correct:

[jposada202020]

Hello, yes I was suspecting that you were trying to do something like that. What you could do is to plot only the range that is needed, and incremented in a loop, if that is what you need

import displayio
from adafruit_display_text import label
import terminalio
from circuitpython_uplot.ucartesian import ucartesian
from random import choice
import time
import board
from circuitpython_uplot.uplot import Uplot

# Setting up the display
display = board.DISPLAY

plot = Uplot(0, 0, display.width, display.height)
g = displayio.Group()

# Set a white background
# Create the display object - the third color is red (0xff0000)
DISPLAY_WIDTH = 200
DISPLAY_HEIGHT = 200
BLACK = 0x000000
WHITE = 0xFFFFFF
FOREGROUND_COLOR = BLACK
BACKGROUND_COLOR = WHITE

background_bitmap = displayio.Bitmap(DISPLAY_WIDTH, DISPLAY_HEIGHT, 1)
# Map colors in a palette
palette = displayio.Palette(1)
palette[0] = BACKGROUND_COLOR
# Create a Tilegrid with the background and put in the displayio group
t = displayio.TileGrid(background_bitmap, pixel_shader=palette)
g.append(t)

text_temperature = label.Label(terminalio.FONT, color=FOREGROUND_COLOR, scale=3)
text_temperature.anchor_point = 0.0, 0.0
text_temperature.anchored_position = 25, 0
g.append(text_temperature)

text_humidity = label.Label(terminalio.FONT, color=FOREGROUND_COLOR, scale=3)
text_humidity.anchor_point = 0.0, 0.0
text_humidity.anchored_position = 130, 0
g.append(text_humidity)


plot_1 = Uplot(
    0,
    50,
    200,
    60,
    padding=1,
    show_box=True,
    box_color=BLACK,
    background_color=WHITE)

plot_2 = Uplot(
    0,
    180,
    200,
    60,
    padding=1,
    show_box=True,
    box_color=BLACK,
    background_color=WHITE)


temperatures = [26, 25, 24, 23, 28]
humidity = [66, 67, 71, 79]
x = list(range(0, 144, 1))
temp_y = [choice(temperatures) for _ in x]
humidity_y = [choice(humidity) for _ in x]

g.append(plot_1)
g.append(plot_2)

display.show(g)
display.refresh()


for i, element in enumerate(x):
    ucartesian(plot_1, x[0:i], temp_y[0:i], rangex=[0, 143], rangey=[0, 40], fill=False, line_color=BLACK)
    ucartesian(plot_2, x[0:i], humidity_y[0:i], rangex=[0, 143], rangey=[0, 100], fill=False, line_color=BLACK)
    text_temperature.text = f'{temp_y[i]}'
    text_humidity.text = f'{int(round(humidity_y[i], 0))}%'
    time.sleep(0.1)

As you can see, even the list is made of 144 values, I am only plotting some of them depending of the i.

What I would do is this

data_end = find the last non-zero value in sensor.historic_data_temperature (EDITED)

# and then

    ucartesian(plot_1, x[0:data_end], temp_y[0:data_end], rangex=[0, 143], rangey=[0, 40], fill=False, line_color=BLACK)
    ucartesian(plot_2, x[0:data_end], humidity_y[0:data_end], rangex=[0, 143], rangey=[0, 100], fill=False, line_color=BLACK)

[jposada202020]

This is the graph with real values, but automatic Y range... on the last points / 30 minutes, I did open the door and so the temperature decreased and humidity increased, that is correct:

Depending on the part of the planet that you live, this could be possible, also heating, A/C. for me at the moment will be if I open the door, will be temperature decrease, humidity decrease :).

[jposada202020]

BTW, this is hack, Library was not intended to dynamic data, maybe you could use the sparkline shapes library, I have just an example here https://github.com/jposada202020/CircuitPython_uplot/blob/main/examples/uplot_sparkline.py or the original one in the library https://github.com/adafruit/Adafruit_CircuitPython_Display_Shapes/blob/main/adafruit_display_shapes/sparkline.py.

[jposada202020]

@casainho made some changes, take a look at the example here https://github.com/jposada202020/CircuitPython_uplot/blob/main/examples/uplot_ucartesian_loggin_data.py

result: https://github.com/jposada202020/CircuitPython_uplot/blob/main/docs/uplot_cartesian.gif

Changes are in 0.8.2. Thanks

[casainho]

It works!! Now rangey works as expected. Thank you.