Questions tagged [curve-fitting]
The curve-fitting tag has no usage guidance.
38
questions
0
votes
0answers
50 views
Fitting exponential trendline to data gnuplot
I'm trying to fit an exponential trendline to the following data which when graphed appears like the following:
Using the following code for the trendline:
\addplot+[raw gnuplot, red, mark=none, ...
1
vote
1answer
98 views
How to draw a complicated smooth curve
I want to make each of the bending very smooth. Only criterion to draw the curve is that it starts from (1,2.5) and ends at (1,2.75). No equation of the curve given. I failed to do that. Please help.
\...
1
vote
1answer
107 views
Plotting a curve using “plot function” Vs Bezier curve (Method of tangents)
Regarding the shown MWE, I need to plot a parabola with the following properties:
Parabola starts at point "A"
Parabola ends at point "B"
Peak of the parabola is at point "F&...
0
votes
0answers
36 views
Drawing third, fourth and fifth degree parabolas the using “Stanli” package
In the shown MWE, a parabola is drawn using the "Stanli" package. How can I shift the peak of the curve to point "D" while maintaing the tangency of the parabola with the dashed ...
0
votes
1answer
93 views
Draw a “super-twisting” curve TIKZ
I am trying to draw the "twisted" curve in the pic:
I am not an expert in Tikz, and I have written the following latex code:
\documentclass{standalone}
\pagestyle{empty}
\usepackage{tikz}
\...
1
vote
0answers
45 views
Trend line through points with pgfplots
How can I draw a smooth curve through the points using pgfplots that are not necessarily connected, using a .txt file?
I do not want the smooth line that goes over each point but rather a fitting plot ...
0
votes
1answer
56 views
0
votes
1answer
73 views
How to fit a Prony series to data in PGFPlot?
I am trying to fit Prony series to my viscoelasticity data in PGFPlots. The problem I am running with is how to mathematically define the Prony series that gnuplot can recognise the function and do ...
0
votes
2answers
294 views
3
votes
1answer
66 views
Barred basin model of evaporite formation
My goal is to obtain something that resembles the image below
What I have so far is this
My main problem is that I find it difficult mixing TiKz with PGFplots, in particular my plot is too small ...
4
votes
2answers
106 views
Arrows along a partial named path
I am trying to reproduce following image:
For that I create 3 nodes, a support path (mycurve) and (hidden) support lines (l1 to l12) then place other nodes on the lx and mycurve intersections. This ...
1
vote
1answer
80 views
pgfplots dateplot: how to add best fit line
This is my plot:
I would like to add the best fit line in correspondence with the first straight section (from 16:23 to 16:33). The equation of the line is y = 0.022x + 19.018.
This is my attempt
\...
1
vote
1answer
96 views
Curve fitted parameter appears as 0 in legend (pgfplots, gnuplot, pgfplotstable)
I fitted a curve on a dataset, but parameter c remains always 0 in the legend of the plot's fitting equation. Can you please help me why?
I also checked the generated parameter.dat file and it ...
4
votes
1answer
1k views
Scatterplot with trendline with curve fitting equation of polynomial of degree 3
I'm trying to plot a scatter plot with curve fitting trendline of polynomial degrre 3. I have been able to create the required graph with trendline in excel. I tried to plot the same graph with the ...
-3
votes
1answer
545 views
Draw the curve by tikz
I want to draw a curve using controls (in picture). Please, everybody help me!
0
votes
1answer
218 views
Plotting normal curve with extremely small variance
I need a graph of a normal bell curve centered around t with a variance as small as possible (without being straight line). I've found a bunch of methods to plot a normal graph, but none where the ...
2
votes
1answer
72 views
How do I use a drawn arc as border?
The question is writen in the title, i got the grey filled part and it has to fit on the arc. I did it manualy but supose there is a better solution i can't figure out. Thank you in advance, Leo.
\...
0
votes
1answer
100 views
tikzpicture curve partly displayed
I would like to plot in the same graph a theoretical plot and some experimental measurements. The pgfplot displays only a part of it (see image).
Here is what I compile:
\begin{tikzpicture}
\begin{...
2
votes
1answer
348 views
How can I plot a smooth line of fit through the following points and is there an easier way to plot (x,y) labels for each point?
\documentclass{standalone}
\usepackage{pdfpages}
\usepackage{tikz}
\usepackage{pgfplots, pgfplotstable}
\pgfplotsset{compat=1.12}
\usepgfplotslibrary{fillbetween}
\usepackage{amsmath}
\...
2
votes
1answer
95 views
Empty areas in figure and optimal curve fitting
I need to create a logo (well, a part of it) as an outline. The relevant part in MetaPost looks:
beginfig(1)
path ellipse;
ellipse = fullcircle xscaled 5in yscaled 1in;
for k = 0 step 45 until ...
6
votes
1answer
2k views
pgfplots/gnuplot: How to find the curve-fitting function passing through certain points and plot it?
Considering this code, I would like to know how to find the curve-fitting function passing through the first four points (i.e. X=[0,3]) and plot this function (e.g. the red dashed line in the desired ...
1
vote
2answers
303 views
Draw curley bracket in Latex
How to draw a curly brack around the nodes. Like I have given in the image.
\begin{center}
\begin{tikzpicture}[shorten <=1cm,shorten >=1cm,-latex, align=center, node distance=1cm and 10cm,on ...
7
votes
2answers
1k views
Tikz: Shifting a curve to get a tangent condition
I want to achieve a very similar thing like in this post Line tangent to a a curve (using plot or controls), starting at a point. But I need a more simple solution. I can create a first tangent curve ...
1
vote
1answer
391 views
tikz curves with labeled nodes as start and end points
These days I'm typesetting a lot of trees (in the graph-theoretic sense) using pst-jtree, which is essentially a collection of macros over pstricks. So, I might have the following.
\jtree
\! = {A}!...
3
votes
1answer
192 views
plot and fit from pgfplottable
I would like to plot a graph from data created inside pgfplottable.
I have one file of data data.dat:
x,y
1,2
2,3
3,4
4,5
5,8
6,9
7,34
And this code :
\documentclass{beamer}
\usepackage{etex}
\...
6
votes
2answers
4k views
Interpolation and curve fitting - Tikzpicture? Gnuplot? Pgfplot?
well, I am fairly new to LaTeX, but I tried my hardest do find a solution for my problem but I couldn't find a proper answer, so I hope someone here has the answer or another suggestion for me.
I ...
8
votes
5answers
683 views
drawing two curved arrows with ellipse between them
how can I draw two curved arrows with two ellipses between them like attached image?
1
vote
0answers
359 views
Drawing knots with 8 crossings and labels [closed]
So for a project, I have to draw the knot diagrams of all alternating knots with up to 8 crossings and label the regions bounded by the knots. For knots with up to 7 crossings, I used PSTricks, pst-...
5
votes
3answers
1k views
2
votes
1answer
3k views
Edgeworth Box of Pareto efficiency
I would like to have a figure like the following image, but I can't find a way to make the red convex curves.
My code so far contains:
\begin{tikzpicture}
\draw (1, 3.5) to[out=0,in=90] (3.5, 1);
\...
6
votes
1answer
3k views
Draw curved arrows between nodes in tikz-qtree
Is there a "clever" way to draw curved lines between nodes without them to go all through the picture?
Here is my MWE :
\documentclass[11pt]{beamer}
\usepackage{ulem}
\usepackage{tikz-qtree}
\...
3
votes
0answers
172 views
How to define a pgf curve with points instead of controls? [duplicate]
The syntax to produce a Bézier curve in pgf is
\pgfpathcurveto{first control point}{second control point}{target}
This defines the curvature by control points. Considering the degrees of freedom the ...
9
votes
2answers
7k views
Fitting a curve from a table! (Tikz/Pgfplots)
I ploted the data from the table below (first vs. fourth column),
3000 1.2970e+00 0.198956 0.258046
3100 8.6050e-01 0.18747 0.161318
3200 5.7970e-01 0....
1
vote
1answer
369 views
Legend entry with curve fits
I am plotting two data sets with curve fits added manually (by defining two functions). How can I edit my legend entry to combine the data points and lines into one icon? So instead of having four ...
20
votes
3answers
10k views
Smooth curve through points with pgfplots
I know that one can get smooth point connections with option smooth to \addplot that takes the previous and the next point into account, but this still connects all the points.
How can I draw a ...
41
votes
1answer
3k views
Hobby path realization in convex hull approach
Motivation
In the answer
Highlight a group of nodes in a tikz tree, Jake suggested combining the convex hull approach from padded boundary of convex hull with the hobby path and I was really intrigued ...
80
votes
6answers
7k views
Curve through a sequence of points with Metapost and TikZ
This question led to a new package:
hobby
I found Metapost best for drawing complex smooth curves (i.e., Bezier, splines), since you do not have to directly specify Bezier control points. ...
12
votes
1answer
5k views
What “smooth” plot interpolation algorithm does pgfplots use?
In the pgfplots manual it says:
\addplot+[smooth]
Smooth plots interpolate smoothly between successive points.
In order to choose the right sampling of points from a function evaluation for plotting,...
