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Questions tagged [data-visualization]

Constructing 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.)

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1answer
13 views

How can I visualise time dependencies of sensor value readings?

I have data from some sensors which are installed at different locations. For analysis, I would like to see in which direction and at which speed the analysed material propagates in the room. The ...
3
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2answers
166 views

3D plot of Akaike Information Criterion (AIC) for suitable ranges of Lˆ and k

Giving that Akaike Information Criterion (AIC) is as follow: How can I Produce a 3D plot of AIC for suitable ranges of Lˆ and k. In other words what could be a suitable ranges of L to try? Moreover,...
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0answers
4 views

Plotting Custom PDF in R [migrated]

Given: Consider the density function $\phi$ defined on $\mathbb{R}$ for $a\in \mathbb{R}$ and $b \in \mathbb{R}_+^\star$ such that $\forall x \in \mathbb{R}$, $$ \phi(x; a,b) = \frac{1}{\sqrt{2\pi b^...
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0answers
5 views

How to indicate a series name when plotting multivariate time series? [migrated]

When plotting bagged bootstrap predictions, how does one provide a series name for a legend? I'm trying: ...
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0answers
11 views

Would a line graph be appropriate to display this specific data?

I want to display data that is of my own personal job applications/replies/offers between two different time periods. One where my name was a certain way, and one after I changed my name, but I want ...
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0answers
12 views

Appropriate visualization and statistical testing using resampling stats

I'm using a linear SVM to perform classification on a dataset. It seems to me that there are many ways to visualize my results and report their statistical significance, and I'm unsure of best ...
2
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3answers
59 views

Can I guess which time series model (ARIMA, SARIMA) I should use just by looking at the time series plot?

I have the time series plot shown above. Is is possible to know which model I should use solely by looking at this plot?
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0answers
17 views

How to plot the gradient descent of a RNN model built using keras? [on hold]

I'm exploring how an LSTM solves the problem of vanishing gradients. I have created a simple LSTM model on keras. I know that model.fit() returns a history object that stores model loss and accuracy ...
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1answer
24 views

Interpret Intercept Plot from Series of Quantile Regressions in R

Essentially, I am looking at a set of housing data from 2000-2017 and I am examining 'affordability' by year through quantile regression. The Y variable (affordability) is a ratio of what an ...
1
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0answers
31 views

At what scale to plot variables in different units? [duplicate]

I have 4 series/variables over time. They are in totally different units (monetary, quantities, elasticities, and percentages). I want to make a line plot for each of them. I know it makes no sense to ...
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0answers
19 views

Standard partial regression plot vs. effect plot from 'effects' package

I'll use a modification of this example to ask my question about an apparent alternative way of presenting a partial regression plot, using the effects package. ...
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0answers
26 views

How to interpret this visualisation?

I am trying to figure out if this is a good plot or an example of bad plot. https://www.tcsnycmarathon.org/analytics I am trying to figure out what does %Finish by Gender plot on the right is ...
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0answers
12 views
+50

on the understanding of visualization of the fully connected layer

When the final fully connected layer is visualized, it shows a big picture consisting of mini-pictures patching together and overlapping with each other. The mini-pictures are visibly recognizable to ...
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0answers
8 views

How to add proper labels to sarima.for plot?

I am doing some prediction on time series with the astsa package, using the sarima.for() function. The plotting is fine, but I am not sure how to add proper x-y ...
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0answers
15 views

Use historical data to build surface with limited number of points [closed]

Lets say I have historical surfaces of data which vary slightly during time, but keeps similiar dynamics. I would like to use these historical data sets to estimate todays surface (given a limited ...
0
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1answer
24 views

What insights can I demonstrate in the difference between the two chart shapes?

When I see the billing period data, I see I'm progressively using more gas each period. But when I look at data by monthly I'm using less gas.
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1answer
40 views

Approximate the data to a single curve

The question might be simple, but I am not able to find the answer. Hence I am asking here. I did search google but didn't get an answer. I have a continuous stream of data coming from an API in the ...
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0answers
6 views

Dendrogram: Hierachical Clustering on Text data

I would like to use hierarchical clustering for my text data using sklearn.cluster library in Python. However, when I plot the dendrogram to inspect where I should ...
0
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1answer
19 views

Running t-SNE on a data set where each sample is a variably-sized 3D point cloud [closed]

I want to perform t-SNE on a collection of individual 3D point clouds, each representing a different object, in order to see how they are distributed. Each point in each point cloud has only the x,y,z ...
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0answers
26 views

Can someone help me understand this plot?

I am struggling to understand the outcome of DCC GARCH correlations in this plot. I don't understand how the y-axis points are the same even though the correlations look like they are moving over time?...
0
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1answer
18 views

Some help interpreting posterior plots

I needed some help interpreting and comparing the plots that I created. I'm not really sure what is the most important thing to talk about when comparing these plots. I know for these plots that the ...
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0answers
35 views

Visualising Generalised linear models

I read about linear regression where we assume, the response is linear and the noise $\epsilon$, follows $N(0, \sigma^2)$ (Gaussian noise model), this leads us to conclude $E[Y|X] = b^*x$ and that the ...
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0answers
39 views

Plotting correlation coefficient against regression coefficient

I have samples taken in different places with yearly data for temperature and a measure of photosynthetic activity/biomass (NDVI). So for example for each sample I have ... Year 2000 2001 2003 ...
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0answers
7 views

Alternative to boxplot [duplicate]

So I have some data that would be obvious to be used in a boxplot. However, I tend to think boxplots are quite boring, and not very drawing - visualization wise at least. So basically my data would ...
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0answers
6 views

Use R to impose bubble data on an image [migrated]

I want to take an image, like this: And I want to superimpose data bubbles on it, so it would look like this: I want to do this in R (because I know R) Let's imagine the bubbles represent IQ (or ...
1
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2answers
39 views

General question: How do you visualize/deal with a lot of predictors?

In STATS classes, one is always taught to draw a picture to look for outliers, to look for the distribution type, to look for patterns in general. However, when you have a dataset with a lot of ...
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0answers
16 views

How to check the assumption of homogeneity of variance visually using box-plots

Can anyone confirm if APA no longer recommends using statistical tests for checking assumptions? If so, what are the alternatives? I have been told to check visually but I am unsure how to check ...
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0answers
16 views

How to loop through CSV files in directory and output them as RDS files [migrated]

This is the code I have for now, I keep getting an error that fd is undefined, I tried defining it as fd=data.frame() but it doesn't work. Code: ...
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0answers
11 views

How to detect “minimal acitvity” intervals on a chart?

I have several charts those look like the screenshot: And I should create program for detecting "intervals with low activity" (red rectangle on the screenshot). Are there any methods or algorithms ...
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0answers
13 views

Visualize Named Entities Relations

I have a dataset of named entities (NER) and text documents. For each entity I have N documents associated, while an entity belongs to one among multiple classes like (here the CoreNLP ones) ...
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0answers
9 views

Fitting of 2D data [duplicate]

I have a 2D data-set. If we plot, it looks like above. Now if I want to know the central value of the distribution $\theta$ and width of the distribution $W$. How do I do that?
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0answers
14 views

How can I add subscript to Y axis without using the expression() and paste() command? [duplicate]

I was able to add subscript and superscript for the title but I am unable to do that for the Y-axis! I want to write µgml-1NO3--N. Can any one help me on this? Thank you! ...
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0answers
40 views

How can I add subscript in graph titles? I tried a code and it ran well for the first time however, its giving me an error. Any help is appreciated! [closed]

I tried this code and it ran well for the first time however, its giving me an error. Any help is appreciated! ...
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0answers
29 views

What is a clear question in itself? [duplicate]

What are the properties of a clear question? What are the properties of an ambiguous question? Put otherwise what makes a clear question and what makes an ambiguous one?
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0answers
8 views

Plotting groups of sample distributions as CDF with dispersion

Context I repeatedly run an experiment each repetition of which results in a sample of observations that I assume follow some distribution. (It is not important here what the distribution represents.)...
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0answers
32 views

How to plot error bands (uncertainty) for different available x values?

Question: how to plot uncertainty bands where each set of (x, y) data points has different x-values to be available. Context: The use case here is training neural network experiment (reinforcement ...
4
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1answer
137 views

What would be the output distribution of ReLu activation?

Suppose my data has a normal distribution and I am using an NN as a model, wherein I am applying ReLu, non-linearity to it. I am curious to know how the output distribution of the ReLu looks like? ...
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0answers
31 views

Plot confidence interval of average polynomial fit from coefficients

I am studying the propagation of a wave and to do that I want to follow the position of my maxima over time. In order to do that I thought to fit a polynomial on the data of each replicate, then save ...
3
votes
1answer
31 views

how can I tell if the instances in a dataset are i.i.d given a timeseries plot?

So I have the following time series plot and I am asked if the data is independent and identically distributed and I'm not quite sure how I would tell? This represents the number of people going to ...
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0answers
44 views

How do I interpret the random effect plot?

For example I have the lmer model ...
1
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1answer
93 views

Drawing 95% ellipse over scatter plot

The context is regression analysis using Eviews, but first I wanted to create a few scatter plots and overlay error ellipses on them. Eviews doesn't support that kind of graph ornamentation so I am ...
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0answers
20 views

How to read Partial Regression Plot?

Partial regression plot is a plot: • X's: residuals from model X[k] ~ X[-k] • Y's: residuals from model Y ~ X[-k]. But how to read it? What does it show? Can I expect sth and if it appears/does not ...
2
votes
2answers
150 views

Visualization of the number of transitions between states [closed]

I am currently developing a Markov model for ordinal data. In order to proceed with the modeling, I would like to check the distribution of the number of transitions per individual in my data set. ...
1
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1answer
28 views

What does area under this density plot gives me?

I am new to data science and trying to grasp the concepts. I have a question in my exercise asking "what proportion of US states have populations larger than 10 million?". The density plot is shown ...
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0answers
46 views

XY Graph from two time signals

I have two measurement signals (let's say a voltage signal and a current signals), both with timestamps and corresponding values. The timestamps of the two signals doesn't match up and aren't evenly ...
2
votes
1answer
27 views

Apply 3 sigma formula in gamma distribution?

Let say i have some data that follows gamma distribution, and i calculated the Mean and Standard deviation of the gamma distribution. I also know that there are some outliers(Noise) in the data i ...
2
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0answers
27 views

Does t-SNE in 3 dimensions offer any additional information to 2 dimensional t-SNE?

t-SNE is a data reduction technique that primarily gives information about local similarities. Clustering in a t-SNE graph usually (but not always) indicates some hidden structure in the higher-...
0
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1answer
61 views

Determine thresholds for test from ROC-curve

I'm trying to determine the threshold from my original variable from an ROC curve. I have generated the curve using the variable and outcome, and I have generated threshold data from sklearns ROC ...
3
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2answers
39 views

Example of dataset where the data collected at time-points $g(t_1), g(t_2), \ldots$

What would be some practical scenarios where we collect data at time-points $g(t_1), \ldots, g(t_n)$, where $g$ is an increasing function? For example, $g(t) = \exp(t)$ or $\ln t$. To be more clear, ...