Tagged Questions

Mathematics is the study of quantity, structure, space, and change. Any math questions on this site should be programming related.

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2
votes
1answer
35 views

Logical operators in if-else in R

I have the following table (5 columns and 3 rows) called mat : AC CA RES 1 0 2 2 1 3 0 0 0 1 The operation being performed is mat[1]/mat[1]+mat[2] I am testing for the following : ...
0
votes
2answers
30 views

how to find nearest latitude and longitude form current place?

I have a dictionary with a collection of n number of latitude, longitude and address. I want to calculate which (latitude and alangitude)point is closest from current user location(latitude ...
0
votes
1answer
26 views

Adding a return variable to a Number in Javascript

I need to add the OptionPricing variable to the 2: 258 which is in the var AccompPricing, in this script. I want to write something like this 2: 258 + (var Price), but it doesn't work like that. The ...
1
vote
1answer
17 views

Android, remove gravity from the accelerometer using the compass

First of all, I suppose the device at rest at the first measure so the acceleration I have is the gravity one, second I won't use a low pass filter. Android gives me the linear acceleration and the ...
0
votes
1answer
99 views

what mathematical model can I use for this and how to implement it in c++/c#

I want to write a function that gets up to six parameter and an array of input values and map inputs value to output based on the following conditions: we know min and max of input values. The ...
0
votes
1answer
43 views

Implementing the Shih-Wu Euclidean distance transform: what is R(p) used for?

I'm attempting to implement the Shih-Wu distance transform algorithm, as described on page 5 of the pdf. It looks fairly simple but I'm hampered by my limited math (or possibly my reading ...
0
votes
0answers
83 views

JavaScript simple calculation

I'm pretty sure I'm being stupid but why isn't this working!? form.find( '.per_time' ).on( 'change', function() { var price = parseInt( form.find( '.section-price' ).attr('data-price'), ...
-4
votes
2answers
88 views

Recursion does not seem to stop in a complicated code [closed]

I wrote a program to generate all possible matrices with some conditions. It takes argument 'r' and 'n', where 'r' is the number of rows or columns in a matrix, and 'n' is the maximum number that the ...
0
votes
3answers
25 views

Polynomial fitting using L1-norm

I have n points (x0,y0),(x1,y1)...(xn,yn). n is small (10-20). I want to fit these points with a low order (3-4) polynomial: P(x)=a0+a1*x+a2*x^2+a3*x^3. I have accomplished this using least squares ...
0
votes
0answers
17 views

{LESS] multiple gradients with vendor prefixes

I want to create a background-image aka. gradient mixin with these features: unlimited amount (not finished yet, but kinda works) adapting vendor prefixes (partially works) I tried lesshat, but ...
0
votes
0answers
11 views

Clamping the dot product in a Slerp for Quaternion

I'm looking at two different source for the Slerp method of interpolation between two quaternions. They are pretty similar except for one notable difference: one clamps the dot product between 0 and ...
0
votes
4answers
56 views

Strange issue in converting Feet and Inches to Centimeter and Vice Versa

public static double convertFeetandInchesToCentimeter(String feet, String inches) { double heightInFeet = 0; double heightInInches = 0; try { if (feet != null && ...
0
votes
1answer
47 views

How to get a 3D point in my space with Yaw, Pitch and Roll and len [closed]

i need to calculate a 3d point in my world space when i have roll pitch , yaw , len. need a function like this return for me a 3dpoint : Get3DpointFrom_yaw_pitch_roll(yaw,pitch,roll,len) Thanks ! ...
-3
votes
0answers
39 views

3 ants and a triangle [closed]

Was at an interview today and the interviewer asked me a question to analyse my problem solving skills. He asked if there was a triangle with an ant placed at each angle of the triangle what is the ...
1
vote
3answers
34 views

scanning a float, getting seemingly random values

I was given an assignment to create a procedure that scans a float, called getfloat. for some reason, I am getting random values. If I enter "1" it prints 49.Why does this happen? And also, when i ...

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