Hi,
I would like to know if anyone has tried to read and write files from the Calculator.
Many thanks in advance
Juan Antonio
Well, from a quick test I just did, it errors when trying to use the
open function:
Code: OSError: [Errno 30]
Which corresponds to a "Read-only file system" error, which makes sense.
You can however read/write lists from the calc's variables via ti_system's recall_list and store_list functions. The default L1 to L6 lists but also custom-named ones.
Edit: it even works with complex lists, which is pretty cool:
Hi Adrian,
Many thanks for the alternative.
I am thinking to upload a txt file to the calculator to read it. For that escenario, do you think that is possible to use Micropython?
Well, that doesn't seem like a good usecase for Python, no. And may even be something TI doesn't want people to do (hence the lack of proper file support?).
TI-Basic programs are basically text though, so that's another option...
Oki,
Following your approach: “lists from the calc”
Is it possible to create that list in my computer and later import in the calculator to use in a program?
In that way, I could use the functions: recall_list and store_list
With data loaded from the computer to the calculator
Hi Adrian,
I found this video which show how to do it:
https://youtu.be/izNJuzNFyp8
I will try tomorrow
Cheers
Hi Adrian,
I was able to import data from a CSV file into the internal variable L1.
When I execute this simple program:
Code:
from ti_system import *
recall_list("L1")
I receive an error about "The variable doesn´t exist"
but if I type L1 in the calculator i see the values. What is missing?
L1 is stored in RAM in the same way that the Python script.
Many thanks in advance
Juan Antonio
Many thanks
Code:
import ti_system as system
import ti_plotlib as plt
I = system.recall_list("1")
U = system.recall_list("2")
plt.cls()
plt.auto_window(I, U)
plt.title("Demo")
plt.pen("thin", "solid")
plt.axes("on")
plt.color (0, 0, 255)
plt.labels("I" ,"U" ,11 , 2)
plt.scatter(I, U, "x")
plt.color (255, 0, 0)
plt.pen("thin", "dash")
plt.lin_reg(I, U, "center", 2)
plt.show_plot()
Adriweb wrote:
Well, that doesn't seem like a good usecase for Python, no. And may even be something TI doesn't want people to do (hence the lack of proper file support?).
TI-Basic programs are basically text though, so that's another option...
How would I do this?
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