The scatterplot tag has no wiki summary.
-3
votes
1answer
65 views
Calculating the linear model with R
I need to calculate the linear model in R, i did the following:
summary(model)
But what if I wanted to calculate only the first point? A bit stuck with this one... Many thanks!
Here is the code ...
0
votes
0answers
22 views
Contours of percentiles on level plot [migrated]
How can we estimate the level contours that correspond to what percentage of points lie inside the contour?
This post describes how to add contours to a scatterplot in R:
Scatterplot with ...
7
votes
6answers
370 views
Graph for relationship between two ordinal variables
What is an appropriate graph to illustrate the relationship between two ordinal variables?
A few options I can think of:
Scatter plot with added random jitter to stop points hiding each other. ...
3
votes
3answers
142 views
Using scatter plots to understand multiple values of Y for a given X
As I understand it, a scatter plot can contain multiple data points with the same independent variable value, and different values for the dependent variable. For example, if the horizontal axis ...
1
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0answers
160 views
How to interpret a scatter plot for the whole model in a linear multiple regression analysis?
I am writing a very basic report on ability of three predictors (two dichotomous and one continuous) to predict the criterion. I created a scatter plot for the whole model, and all I have to do is ...
1
vote
1answer
67 views
illustrate interaction without ANOVA, other methods?
I am wondering whether there are acceptable ways to illustrate the presence of an interaction besides using an ANOVA. I can't use an ANOVA because I have unequal sample sizes, and due to the nature ...
0
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2answers
365 views
Problems plotting GLM data of binomial proportional data
This might be a question for the programmers, but I thought I would ask here first. Im comparing browsing pressure on plants between sites. Ive a value to indicate Browsing Pressure and count data ...
9
votes
1answer
624 views
Getting different results when plotting 95% CI ellipses with ggplot or the ellipse package
I want to visualize the results of a clustering (produced with protoclust{protoclust}) by creating scater plots for each pair of variables used for classifying my ...
1
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0answers
522 views
How do I create a categorical scatterplot in R like boxplots? [closed]
Does anyone know how to create a scatterplot in R to create plots like these in PRISM's graphpad:
...
0
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2answers
128 views
Given a set of data, how can I calculate the equation of the mean line that passes through the data?
I have a set of data that I gathered doing some tests. I plotted it and created a scatter chart. I would like to find the equation of the mean line that goes through these points. How can I do this? ...
5
votes
1answer
587 views
Assumptions of generalised linear model
I have made a generalised linear model with a single response variable (continuous/normally distributed) and 4 explanatory variables (3 of which are factors and the fourth is an integer). I have used ...
2
votes
3answers
543 views
Correlation plots with missing values
I have 9 vectors of numeric data. I want to make correlation plots for these 9 vectors. However some vectors are of a different length to others - some have up to 240 observations while others have ...
11
votes
1answer
2k views
Scatterplot with contour/heat overlay
I saw this plot in the supplement of a recent paper and I'd love to be able to reproduce it using R. It's a scatterplot, but to fix the overplotting there are contour lines that are "heat" colored ...
13
votes
3answers
2k views
What's a good way to use R to make a scatterplot that separates the data by treatment?
I'm very new with R and stats in general, but I need to make a scatterplot that I think might be beyond its native capacities.
I have a couple of vectors of observations and I want to make a ...
1
vote
1answer
407 views
Generating volcano scatterplot
This might look a very silly question to many of you but please answer.
I am interested in generating a volcano plot for my dataset, which has four columns and all values are in log2. column 1 has ...
4
votes
3answers
2k views
How to do a pretty scatter plot in R?
I am trying hard to do the following and have already spent a few hours in vain:
I wanted to do the scatter plot.
But given the high dispersion on those dots, I would like to bin the x-axis and then ...
10
votes
2answers
2k views
How to draw neat polygons around scatterplot regions in ggplot2
How do I add a neat polygon around a group of points on a scatterplot? I am using ggplot2 but am disappointed with the results of geom_polygon.
The dataset is over ...
1
vote
2answers
98 views
Find degradation rate on a scatterplot
I work for a commercial printing company, and am collecting data regarding the quality of our printing over time (density and dot gains). Essentially, for every job I have a date, a density, and a ...
4
votes
3answers
2k views
How can I draw a boxplot without boxes in R?
Using R, I'd like to plot two boxplots without the boxes—just the points.
Creating clean boxplots in R is trivial:
...
-1
votes
2answers
326 views
How to present several ANCOVA findings
I have six scatterplots (such as the one below) that show an insignificant interaction of the factor (X2) (e.g. gender, age, education etc.) with the predictor (X1) on Y. (X1 is significant.)
The ...
3
votes
3answers
723 views
Creating univariable smoothed scatterplot on logit scale using R
I am learning logistic regression modeling from the book Applied Logistic Regression by Hosmer.
I need to create a plot named "create univariable smoothed scatterplot on logit scale", something like ...
3
votes
3answers
438 views
What are alternatives to scatterplots when studying the relationship between two numeric variables?
I have questions about a study I was reading. In this study about children and money, the relationship between the age of the children and their weekly pocket money was assessed. The researchers ...
9
votes
3answers
3k views
How do I avoid overlapping labels in an R plot?
I'm trying to label a pretty simple scatterplot in R. This is what I use:
plot(SI, TI)
text(SI, TI, Name, pos=4, cex=0.7)
The result is mediocre, as you can see ...
3
votes
2answers
2k views
Automating plotting CSV files quickly and with some level of artistic control
Suppose my CSV file has time and various columns of data vs time.
I want to be able to automate plotting. To a file at least; multiple formats or to the screen as well is a plus.
There will be lots ...
18
votes
2answers
413 views
Good online resource with tips on graphing association between two numeric variables under various conditions
Context:
Over the while I've acquired a set of heuristics on how to effectively plot the association between two numeric variables. I imagine most people who work with data would have a similar set ...
3
votes
1answer
261 views
Plotting a discriminant as line on scatterplot
Given a data scatterplot I can plot the data's principal components on it, as axes tiled with points which are principal components scores. You can see an example plot with the cloud (consisting of 2 ...
7
votes
2answers
189 views
How can I remove the z-order bias of a coloured scatter plot?
I'm currently working on a plot engine for my project. This engine should be robust for a wide range of inputs. In order to analyse the data, I'm plotting a series of graphs utilising ...
2
votes
1answer
319 views
Selectively tweaking pairs() axes?
Question on pairs()
I'd like to use pairs() to choose a functional form for modeling a set of data. I know that several of my independent and dependent variables ...
