Linked Questions

2
votes
0answers
213 views

How to extract data points from an image of a log log plot? [duplicate]

I have a picture of a log-log plot, taken from a paper and I want to extract the data points so I will be able to plot them again along with results of my own solution. I would appreciate your help. ...
101
votes
3answers
13k views

Recovering data points from an image

Unfortunately, some data can only be obtained in picture form (Japanese publications anyone?). Since this cannot be worked with, it has to be converted to a dataset that can; I was wondering whether ...
36
votes
2answers
2k views

How to make a curve selectable from a scaned image and convert it to a list of coordinates

I have a scanned image (binary-ized): Is there any way to reduce one of these curved lines (full or dotted) to a series of its coordinates (e.g., sampling interval of 0.01 on x-axis)? I've read ...
13
votes
4answers
5k views

How do I find the coordinates of points in this image?

I have never used image processing with Mathematica. I need to get the coordinates of the red points from this image I made in Illustrator. Is there a way to get Mathematica to read or detect the x-...
21
votes
1answer
3k views

Is it possible to extract data from an EPS plot not generated in Mathematica?

I want to extract data from an EPS plot not generated in Mathematica and replot it. In general is it possible to extract data from plots in any formats in Mathematica? I searched but unfortunately ...
4
votes
2answers
3k views

Best fit equation from a scanned image

I am trying to extract a curve from a scanned graph and find a best fit equation. For example, starting from: How could one find an equation starting from the image file ?
8
votes
1answer
3k views

Extract data from plots in papers including error bars

I would like to know how to extract data from plots in a paper and, also, how to do that in a way that include error bars. I know there are specific softwares to do that, e.g. Plot Digitizer, which ...
3
votes
1answer
674 views

extract data from a graph image

How do I convert the following image graph into data (if possible into function)? I checked this answer and found that my problem is grid and plot have same color.
5
votes
2answers
519 views

How can I extract trace points from an oscilloscope image?

I have the following oscilloscope image: I would like to extract the points of the yellow curve together with the correct values. Do you know how I could do it? Extracting the yellow curve from the ...
4
votes
1answer
281 views

Extract peaks from image

EDIT: I've managed to solve the problem by using "Get Coordinates" on a couple of points and then figuring out the affine mapping by using the values they're supposed to be at, and applying that ...
3
votes
2answers
305 views

ImageTransformation and corresponding points

I have identified a list of corresponding points on two different images manually. I have found the geometrical transformation between such sets of points using ...
1
vote
1answer
109 views

How to determine distance of periodic features in measured dataset

I have a list of x- and y-values associated with a measured height (z-values). Part of the list is plotted below. As you can see, there is a periodic arranged structure, namely a cross. Now I would ...
0
votes
1answer
174 views

How can I manually pick the data out of the image of a plot?

edit: The automatic way listed here doesn't work for an application like mine in which there are several curves on the same plot that all have the same markers, but you only want one curve (it will ...
0
votes
1answer
173 views

Using a LocatorPane

I have a network of a power grid where the edge are the power lines and the vertices are loads or generators. I was wondering how I can import an image into Mathematica to derive some sort of ...
1
vote
0answers
94 views

Create set of data from vector curve [closed]

I need exactly what is written in the title. Suppose we have some curve plotted: p = Plot[Sin[x],{x,0,2pi}] now we save that as vector graphics: ...

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