Linked Questions
13 questions linked to/from Data has two trends; how to extract independent trendlines?
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multiple curve fitting on scatter plot [duplicate]
I have the following problem:
Let's assume we have a dataset with X and Y values. If we plot them on a scatter plot it would look somehow like the following graph:
If we have a look at this, we see ...
- 103
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64
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How do I calculate two linear regressions in one dataset [duplicate]
First of all, apologies if I am not using the correct terminology to describe the problem. I have a dataset of two variables, which looks like this:
There are clearly two groups of points. I want to ...
- 91
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5
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Fitting an Orthogonal Grid to Noisy Points
I have a list of coordinates that are meant to form an orthogonal grid that could be rotated. The grid is not necessarily uniform. The rotation is not typically greater than 10°. The coordinates are ...
- 281
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"Least square root" fitting? A fitting method with multiple minima
I am looking for the name of a fitting method that will work even if points from multiple dataseries are meshed together.
As far as I understand there are two major methods, least squares and least ...
- 171
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detect line in scatter
I have repeated samples from the following process: Most samples will only contain points that are randomly distributed on a 2-dimensional plane. Sometimes, however, the sample will contain not only ...
- 233
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How to cluster parts of broken line made of points?
I am studying clustering techniques and i am pretty new at this topic. Here is my problem: I created a 5 lines which are made of points. This lines are supposed to be continuous and they look like ...
- 212
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Find one slope on dataset with two y-intercepts?
I have some analysis that compares relative velocity shifts between regions. I have a representative sample below (in reality there are more regions -- this is for clarity).
Assume that I have a ...
- 205
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150
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detect line in geocoordinates
I have repeated samples of geocoordinates of activities in a city. In most of these samples positions will simply be random. In some samples, however, some percentage of the data will be arranged -- ...
- 233
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Is there a name for data that, when plotted, seem to have two (or more) distinct trends?
I have the following plot, which appears to have two pretty distinct trends.
The plots shown here and here depict similar situations. Is there a name for data that have two or more distinct trends, ...
- 277
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63
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Find linear subsets in a 2D point (xy) data [duplicate]
My problem is the very idea of how to start the analysis of 2D point patterns, specifically how to find linear trends within their spatial pattern.
I have XY data points which are organized like in ...
- 607
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59
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Fitting a Vertical Line to Points on a Plot
I have the following data, which produced the following plot.
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- 277
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finding multiple linear regression lines [closed]
This data
t value
1 1
2 0
3 4
4 2
5 2
6 5
7 3
8 4
9 6
10 4
11 6
12 7
13 5
14 8
15 8
16 6
17 10
18 9
19 7
20 12
Represents actually 3 straight lines (1,2,3,....), (0,2,4,...
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What would be the best way to find N clusters equally separated, ignoring outliers?
I am working on a computer vision problem (chessboard recognition), and my goal is to find the lines that correspond to the chessboard lines. I want to do this via Hough transform, since said lines ...
