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Mastering Development

Plotting Accelerometer and Gyroscope data from CSV file

I am trying to plot accelerometer and gyroscope (x, y, z) data from csv file. I know how to plot single x, y,z value. I am trying to figure out to plot both of the sensor data in the same graph. Here is my code used to plot the single x, y, z value: from […]

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Mastering Development

WebGL Point Lighting Issue

I have attempted to create a rotating cube in WebGL and texture it by using the texture mapping technique, which I think worked fine. The cube rotates so as to try and demonstrate the (point) lighting I have tried to implement, but it seems to act in an unexpected fashion and I’m not really sure […]

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Mastering Development

Unhandled Exception: Invalid argument: Instance of ‘Model’ class

I’m trying to update my firestore DB with a new model. Model is termed as ‘Model’ and following is the code that is written to update the same. UpdateLogic.dart var listOfObj = List<dynamic>(); Model model = new Model(‘ABC’, 1, 18); listOfObj.add(model); Firestore.instance.collection(‘xyz’).document(id.uid).setData({“newData”: FieldValue.arrayUnion(listOfObj)}); and my Model class looks like this – Model.dart class Model{ String […]

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Mastering Development

Make PySimpleGUI Radio Buttons generate events

In the past, to build a radio button with Matplotlib Widgets and print the pushed button name to the terminal I have done this: import matplotlib.pyplot as plt from matplotlib.widgets import RadioButtons def update(val): print(rb.value_selected) fig.canvas.draw_idle() fig, ax = plt.subplots(1, 1) ax = plt.axes([0.5, 0.4, 0.1, 0.15], facecolor=’gray’) rb = RadioButtons(ax, (‘pi’, ’42’), active=0) rb.on_clicked(update) […]

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Mastering Development

JavaScript Recursive function return undefined instead of an array

I have the next function: function solveSudoku(prev_tab, fila, columna) { let tab = _.cloneDeep(prev_tab); let sig_fila = fila; let sig_col = columna; if (fila === 8 && columna === 8) { //console.log(tab); return tab; } if (columna === 8) { sig_col = 0; sig_fila = sig_fila + 1 } else { sig_col = sig_col + […]

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Mastering Development

C case-switch statement not running through full loop

Trying to solve a problem on kattis.com called “Bela”, which requires some character comparison, but when i run my code the scanf() function does not get called the last couples time for the last couple iterations of the loop. here is my code: #include <stdio.h> int main( void ) {` char dom; int n; scanf(“%d […]

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Development

Usage of distinct still leading to duplicates

I’m new to prolog, and as I understand it, the purpose of ‘distinct’ is to weed out duplicates. However, this code block: allpartsincity(City):- distinct((proj(Project, _, City), sppj(_, Part, Project, _), part(Part, _, _, _, _))), part(Part, Name, Color, Num, X), format(‘~w ~w ~w ~w ~w ~n’, [Part, Name, Color, Num, X]), fail ; true. yields […]

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Development

Python reports “SyntaxError: invalid syntax” when I run my code [closed]

There are errors in my code def getEntry(player, entries) def getCoord(player, dimension) File “main.py”, line 136 def getEntry(player, entries) ^ SyntaxError: invalid syntax It is a numerical Tic-tac-toe game Thank you very much! class NumTicTacToe: def __init__(self): ”’ Initializes an empty Numerical Tic Tac Toe board. Inputs: none Returns: None ”’ self.board = [] # […]

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Development

Error Running Holoview Example of Chord Diagram

I am learning HoloViews currently and wanted to reproduce the Chord-Example from the Homepage: http://holoviews.org/gallery/demos/bokeh/route_chord.html I copied the lines per line into my jupyter-nb and get always an error this line: chord = hv.Chord((route_counts, nodes), [‘SourceID’, ‘DestinationID’], [‘Stops’]) The error message is: TypeError Traceback (most recent call last) ~\AppData\Local\Continuum\anaconda3\lib\site-packages\numpy\core\function_base.py in linspace(start, stop, num, endpoint, retstep, […]

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Development

SegFault error when computing square root (Newton’s method)

I’m very new to C++, but I’m aware that there are tons of ways to receive a SegFault error, but I’m not sure why I’m getting one here. The goal of the program is to compute the square root of a number using Newton’s method. I’m assuming it has something to do with the recursion, […]