Recent questions tagged math

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math - Calculate second point knowing the starting point and distance

using a Latitude and Longitude value (Point A), I am trying to calculate another Point B, X meters away ... PHP or Javascript. Thank you See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - How to calculate Tangent and Binormal?

Talking about bump mapping, specular highlight and these kind of things in OpenGL Shading Language (GLSL) I have: An ... if it is 100% correct. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Fitting polynomials to data

Is there a way, given a set of values (x,f(x)), to find the polynomial of a given degree that best ... any language is okay) would be useful. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Changing a matrix from right-handed to left-handed coordinate system

I would like to change a 4x4 matrix from a right handed system where: x is left and right, y is front and back ... do you do it for a matrix? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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880 views

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math - negative pow in python

I have this problem >>> import math >>> math.pow(-1.07,1.3) Traceback (most recent call last): ... : math domain error any suggestion ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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880 views

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math - Write a truly inclusive random method for javascript

Javascript's MATH object has a random method that returns from the set [0,1) 0 inclusive, 1 exclusive. Is there a ... 1] it is not truly random. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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602 views

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math - Converting words to numbers in Java

I have seen a lot of algorithms in which you give them a number say "123" and it converts it to One hundred ... four" and gives back "1234" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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767 views

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math - How do you do *integer* exponentiation in C#?

The built-in Math.Pow() function in .NET raises a double base to a double exponent and returns a double ... number and no rounding errors? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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math - Can a IEEE 754 real number "cover" all integers within its range?

The original question was edited (shortened) to focus on a problem of precision, not range. Single ... com/fl_ieee_754_word/ieee_32_bit_word.php See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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874 views

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math - Linear regression of arrays containing NANs in Python/Numpy

I have two arrays, say varx and vary. Both contain NAN values at various positions. However, I would like to ... not sure how it works exactly. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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638 views

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math - How to subtract IEEE 754 numbers?

How do I subtract IEEE 754 numbers? For example: 0,546875 - 32.875... -> 0,546875 is 0 01111110 ... and add with 0.546875 mantissa? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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838 views

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math - how can i show an irrational number to 100 decimal places in python?

I am trying to find the square root of 2 to 100 decimal places, but it only shows to like 10 by default, how can I change this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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993 views

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math - Finding the coordinates of points from distance matrix

I have a set of points (with unknow coordinates) and the distance matrix. I need to find the coordinates of ... the coordinates on x-y only See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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778 views

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math - Plotting a point on the edge of a sphere

So coming from a flash background I have an OK understanding of some simple 2D trig. In 2d with I circle, I know ... 't seem to find a solution. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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911 views

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math - How to perform bilinear interpolation in Python

I would like to perform blinear interpolation using python. Example gps point for which I want to interpolate ... You provide another approach? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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717 views

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math - What types of numbers are representable in binary floating-point?

I've read a lot about floats, but it's all unnecessarily involved. I think I've got it pretty much understood ... for me I would appreciate it. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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924 views

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math - How to get mathemical PI constant in Swift

I am trying to find a way to include the PI constant in my Swift code. I already found help in another answer, to ... I just don't know how... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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855 views

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math - How can I round down a number in Javascript?

How can I round down a number in JavaScript? math.round() doesn't work because it rounds it to the nearest ... first bit. There must be... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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848 views

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math - Do not want scientific notation on plot axis

I regularly do all kinds of scatter plots in R using the plot command. Sometimes both, sometimes only one of the plot ... 2.12.1 on Windows 7. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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