Tag: matrix

JS: convert 2D matrix into another?

I have a 2D matrix with an -1000 to + 1000 X/Y coordinate system. For plotting purposes, I want to transform that into another coordinate system, where 0,0 is at the top left. Any idea how to do that? I know how to do a linear projection of a single axis, but doing that independently yields distortions, especially if the

Find and change item in Javascript array of arrays

arrays javascript matrix vue.js

I am trying to find and change a item that is inside of an array of arrays. My array is like that: The way i’m doing it now is using a forEach: The problem is that I can’t stop the loop and I believe there must be a better way, maybe using the ‘find’ command. I can do this with

Error when creating array of objects in a javascript loop

for-loop javascript javascript-objects matrix

I have a problem creating an array of objects. the problem is that you should only create 2 objects but you end up creating 8 objects, because each value of a property is inserted into a new object. I have an array of objects called columns, which is dynamic since the values and properties are changing what I need is

How to subtract these two arrays

arrays javascript matrix matrix-multiplication subtraction

I am trying to subtract two matrices, I have a function that takes in those matrices and returns a new matrix that has been subtracted. I get this error in node.js: TypeError: (intermediate value).map is not a function This is the function I use from my main file (note: I already have an instance of the class). This is the

Displaying Opencv.js Matrix without cv.imshow()

arrays javascript matrix opencv

Hello Stack Overflow community. I am attempting to extract the pixel values from a cropped section of an opencv matrix to a javascript array in order to feed that data into a tensor for OCR. I cannot use cv.imshow() because it interacts with the DOM and my process is on a web worker. This is what I have so far

Understanding Matrix in SVG

javascript matrix svg

I need help in deep understanding of matrix in SVG. I already know about matrix, I want to rotate and scale without using scale or rotate word. I want to use transform=’matrix(a,b,c,d,e,f)’. I know ‘a/d’ value determine the scale, ‘e/f’ determines the position. tan(b),tan(c) determines the skew. cos(a),sin(b),-sin(c),cos(d) determines the angle.But I want to know how this work, I need