Questions tagged [data-visualization]
Constructing and interpreting meaningful and useful graphical representations of data. (If your question is only about how to get particular software to produce a specific effect, then it is likely not on topic here.)
2,971
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How to cluster and visualise vectors of which the components are class indices?
Let's say I have a dataset $\boldsymbol{\mathcal{X}}$ of $N$ samples wherein each sample $\boldsymbol{x}^{(i)}\in \mathcal{X}$, $i \in {1 \ldots N}$, is described by a set of $D$ features, such that $\...
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How to visualize time series using PCA?
I have two multivariate data sets comprised of 100s of time series, one is the actual recorded data set of time series and the other is a synthetically generated data set based on the recorded one.
...
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A summary plot for mean, standard deviation, median, min and max
I have mean, standard devation, median, min, and max of a dataset, but not the source data. Which summary plot would you recommend for visualising different groups in the dataset?
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Difference between loss, activation functions lanscapes
I have figures below taken from Diganta Misra's paper
"Mish: A Self Regularized Non-Monotonic Activation Function." They visualized both the loss output landscapes in Fig 4 below:
And they ...
- 249
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1
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109
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Plotting multinomial choice regression model in R
I generated myself some data to try some data with 4 levels (health status based on body-mass-index, please don't judge me if the values don't make sense):
...
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summary of the model is good but the plot is not normally distributed
I am doing a linear regression and the summary for the model is good however the plot is not normally distributed, i wanted to know if the model is still valid.
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1
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How do i interpret this plot and summary (multivariable linear regression)
I am not 100% sure how to interpret the plot for multivariable linear regression, especially everything besides the normal Q-Q one.
From my understanding, the plot showed linearity or the model is a ...
Daniella Ara
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17
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Showing suspended (right-censored) data points in diagram (distributed on x-axis)
How is it possible to show the suspended (right-censored) datapoints (distributed on x-axis without value for y-axis) in e.g. Probability Plot - Weibull CDF like the green triangles in attached image?
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Mixing raw data & model based visualization
How to handle the following request from a journal:
I've evaluated a data set using a linear mixed model (lmm). Among the evaluated factors, I was particularly interested in one, which I plotted as a ...
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How to read an ellipsis contour plot? [duplicate]
Page 244, intro to statistical learning 2nd edition.
How do you read the following plot? The subtitle does not make any sense to me.
Do the concentric circles basically depict 90%, 95%, 99% 2-D ...
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40
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How to measure auto-correlation of pixels in a video?
I am working with climate variables time series (such as temperature, wind speed and humidity) and would like to understand how the wind speed (e.g.) at a place is influenced by other entries, by ...
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Residuals vs. Predictor Plot for categorical predictor
I am trying to use Residuals vs. Predictor Plot to evaluate whether to add a new categorical feature (with 2 levels) to my logistic regression. I found this useful page about how to use Residuals vs. ...
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Does tapping into face perception for data vizualization like in the case of the famous "Chernoff face" actually work? What are some notable examples?
Chernoff faces, invented by applied mathematician, statistician and physicist Herman Chernoff in 1973, display multivariate data in the shape of a human face. The individual parts, such as eyes, ears, ...
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Comparing two series of measurements
I measured execution times in environments A-1/2 and B-1/2 for tasks I and II.
I performed these measurements in two different contexts V1 and V2.
I have created a third table in which I form ...
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How to visualize connections between survey participants [closed]
I have the dataset from survey with participants IDs and IDs of another participant (or participants) that first participant knows, just like this:
Participant ID
Knows participant
111
353
111
777
...
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60
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Interpreting Interaction Effects Using Main Effects Between Models
Traditionally, to investigate the interaction effects between 2 variables one would simply add the interaction term to their model. C ~ A + B + A:B. I feel fairly confident with how to interpret these ...
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55
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Slopegraph with too many observations
Currently, I am studying the book "storytelling with data - Cole Nussbaumer Knaflic" to learn about data visualization. Now I am learning why the slope graph can be very helpful. If you have ...
- 387
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54
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How to visualize the results of a method which predicts binned probabilities?
I'm attempting to create a machine learning model that predicts some real-valued data points.
If I was using a straight regression approach (that is, one where the output is a real-valued number), I ...
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What is this matrix-like relation diagram called
I am looking to reproduce a diagram similar to the below, but I am at a loss for a good way to do so - not least because I do not know what the diagram type is called.
The following is an example from ...
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How do I read systematic trend plot in survival analysis? [duplicate]
RESIDENCE is a variable I had to add interaction to in order to adjust for time dependence.
This is the plot I created with:
...
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1
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138
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Which test to use with three variables? [closed]
that's my chart:
let's say that D0.5 was missing OJ. what statistical test could I use in this case?
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Is it possible to describe (draw) the relationship between input and output in Machine learning? [duplicate]
For example, in linear regression, we can say that the relationship between X and Y is linear. When X increases, Y also increases. On the other hand, for non-linear regression (Power model as an ...
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1
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209
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Visualize LSTM for time series sequential data
I am trying to visualize LSTM that is applied to sequential data available here: https://its-ml.de/index.php/plattscaling/
There are 25 features with 50 sequence length.
LSTM layer 1 has 100 cells, ...
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What is the relationship between the threshold and decision boundary in logistic regression?
I've been studying Logistic regression for a few weeks and I have a doubt.
According to what I've been studying, Logistic regression fits a sigmoid function $$ \frac{1}{1+e^{-(wx+b)}}$$ to the data ...
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correlation in the dataset but the data is time-series data
I have to find out the correlation in the dataset but the data is time-series data, so using corr function won't give the correct correlation. So my question is how can I find a correlation between ...
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1
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112
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visualizing confidence intervals in longitudinal models
I have a longitudinal dataset with continuous variables for 6 different time points nested within each ID. I prepared a longitudinal Poisson model with ID as a random effect for the intercepts, which ...
- 1,293
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1
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474
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Example of a three-way interaction plot in R
Is this an example of interaction plot?
However, in the bottom of the article it is wrtitten, that it's not a 3-way-interaction (link to article). How should I understooth it? If it's not a 3-way-...
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What is an effective way to visually compare many sets of confidence intervals?
I am trying to compare intervals for two sets of data. I have $N$ pairs of intervals, where each pair has an interval corresponding to treatment $A$ and then treatment $B$. For example, in the $i$-th ...
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Finding uncertainties of a measured quantity when the distribution of the measured data points is not symmetric
If I have a set of data points and they do not take up the form of a symmetric distribution when i plot them as a histogram. Then, can I calculate the mean and standard deviation from their usual ...
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Generating binary data in shape regions in R
I am trying to figure out how to generate data in a binary classification figure in R.
Two concepts where examples that fall within any of the three 3 × 3 squares are labeled positive and the ...
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36
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Help analysing Mean Residual Life Plot for GPD
I'm trying to fit a GPD for a set of time dependant data. I have two columns, data which is a value on the negative real line where values closest to zero are considered extremes, and time. Using only ...
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49
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What about the tails of a ggplot line graph?
Here is my data with value (numeric), group (A/B), Time (T1,T3), and Condition (neutral/reward) variables.
...
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2
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61
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Visualizing matrix with high numerosity?
I have a matrix with many rows (>18000) and few columns (6), where five are numerical and one is a binary factor and i'd like to find an efficient and simple way to visualize the relationship ...
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134
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Why does plot between same scaled and unscaled data look different? [closed]
I am using the StandardScaler of Scikit-learn to scale my data. When plotting the data and comparing scaled with unscaled I get different results in how the plots ...
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1
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87
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Visualising data from glm/ glmer
Sorry if this question sounds very amateurish, but I am completely new to R and this website. So, I have a data set with counts of infected organisms as a response variable (for three different ...
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553
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Why does data visualization mostly use the Cartesian plane instead of the polar plane?
Suppose there's a dataset that has features like the weight and height of people.
If we plot the dataset, we commonly use the Cartesian plane, the x-axis to represent weight and the y-axis to ...
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1
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242
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How to visualize categorical relationships/interaction over time
I have a dataset that has several machines, the quality of two components over time, and the number of breakdowns in a given year. Simulated Random Data:
Real data consists of 100K machines, the ...
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1
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38
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Plotting discrete user-defined function in R [closed]
set.seed(123)
x <- rnorm(10000,0,2);
s2 <- function(n) (1/(length(x[1:n])-1)*sum((x[1:n]-mean(x[1:n]))^2))^(1/2)
m <- function(n) 1/n*sum(x[1:n])
I want ...
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0
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73
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Outliers in a PCA score plot
I have this dataset of 104 tissue samples from two different types of tumors (B and C) along and 182 observations (gene expression profile). I do not need to understand the underlying biological ...
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1
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323
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Plotting a cdf in r
I am trying to work out and plot the CDF from a PDF. The pdf is
$$
f(x) =
\begin{cases}
0&\text{if}\quad -1\leq x \leq 1\\
|1/x^3|&\text{ otherwise}
\end{cases}.
$$
I know that the CDF is the ...
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1
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Visualizing Numerical Data with 2 Independent Variables on a Single Visualization
This is how my data looks like:
...
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37
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Is there a name for these lines on a plot?
I'm working with plots for which I'm finding the maximum point and labelling the x and y values at which it occurs:
My question is, is there an 'official' name for the red dashed lines that extend ...
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57
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What graph is best suited for this data? (and how can I produce it in R)
I have this df object (9x19),
...
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55
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How to compare class distributions between different datasets?
Context: A machine learning model will be trained using multiple datasets, and the aim is to see if any dataset is better (more balanced, more representative etc) for training. Further context thanks ...
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Should we use measured vs. modelled or modelled vs. measured?
As a non-statistician, I am interested in understanding whether model evaluation should be conducted with the measured values on the x-axis and modelled (or predicted) values on the y-axis, or vice ...
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142
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How to improve difference-in-differences graph?
I want to visualise what basically is a difference in difference graph but in a better way. My first idea was two split violin plots and it looks good but is too complex for the reader.
Any ideas on ...
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When fitting a linear regression model, is it always recommended to plot the residuals?
If my linear regression model provides good results on the test set, and my main goal is to predict correctly, is there still a reason to plot the residuals and check the residual assumptions? (for ...
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Should I include numbers on my NMDS axes?
The actual values of NMDS axes are essentially arbitrary, as I understand them - there's no meaning to be gained from a value of 1 or 100 or 10,000. In keeping with good design principles should I ...
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What is the name of this kind of plot for comparing pairwise differences in ANOVA?
Hello I was curious if this kind of plot had a name. This is generated from SAS when doing Tukey's HSD to visualize which pairwise difference is significant. I quite like this visual but don't know ...
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Can the height of two density distributions be interpreted in a meaningful way?
I created the following density plot for both values of a binary variable. The variable represents unrealised gains. If a (unrealised) position in a wallet (cryptocurrency) is at a gain it takes the ...
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