Questions tagged [curve-fitting]
The curve-fitting tag has no usage guidance.
40
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tikz: draw arc between two specific points
How can I draw between two specific coordinates? Cord are (1,0) and (5,0)
\documentclass{article}
\usepackage[margin=1.5cm,top=1cm,headheight=16pt,headsep=0.1in,heightrounded]{geometry}
\usepackage{...
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1
answer
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Smooth curve with tikz
This graph shows the effect of catalysts on activation energy
\documentclass[12pt]{article}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
\usepackage[full]{textcomp}
\usepackage[greek,italian]{babel}
\...
- 113
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votes
2
answers
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color between two diagrams
Please tell me how can I color between two diagrams?
f(x)= 2x^2 and g(x)= x^4 -2x^2
this is my code:
\begin{center}
\begin{tikzpicture}[line cap=round,line join=round,>=triangle 45,x=1.0cm,y=0....
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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, ...
3
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2
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143
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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.
\...
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vote
1
answer
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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&...
- 733
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1
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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}
\...
- 127
1
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0
answers
54
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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 ...
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1
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60
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curve, area, pgfplot [closed]
I want to draw a image like this using tikz. How should I do that?
0
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1
answer
88
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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 ...
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522
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Curve interpolating with tikz
How can I create a curve by providing the coordinates of points 1-4.
3
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1
answer
80
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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 ...
- 11k
4
votes
2
answers
134
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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 ...
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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
\...
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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 ...
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1
answer
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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 ...
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657
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Draw the curve by tikz
I want to draw a curve using controls (in picture). Please, everybody help me!
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1
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253
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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 ...
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votes
1
answer
76
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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.
\...
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104
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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
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1
answer
405
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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}
\...
- 21
2
votes
1
answer
96
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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 ...
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1
answer
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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 ...
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2
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312
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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 ...
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3
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1k
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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 ...
- 1,551
1
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1
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475
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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}!...
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votes
1
answer
207
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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}
\...
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2
answers
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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 ...
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drawing two curved arrows with ellipse between them
how can I draw two curved arrows with two ellipses between them like attached image?
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366
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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-...
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1
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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);
\...
- 3,182
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1
answer
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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}
\...
- 949
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0
answers
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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 ...
- 2,903
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2
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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....
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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 ...
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3
answers
10k
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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 ...
- 12.5k
42
votes
1
answer
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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 ...
- 61.5k
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6
answers
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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. ...
- 2,600
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1
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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,...
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