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R Graphics - Create Heatmaps in KNIME and use R to add Dendrograms

<p>Create Heatmaps in KNIME and use R to add Dendrograms<br><br>It is possible to create heatmaps with dendrograms with the help to R. You would have to check the code if the distance and cluster settings fit your needs. You can also export the numbers behind the clustering of the 'teeth'.<br><br>The data is from the 'cars' dataset like in your example. I did not check if the heatmap makes sense. The interpretation would have to be done in addition to some column selection and it might be necessary not normalize some data in order for it to make sense in such a display.</p>

URL: forum entry https://forum.knime.com/t/heatmap-with-dendrograms-on-both-axes/18777/2?u=mlauber71
URL: Hub: more R Graohics with KNIME https://hub.knime.com/search?type=Workflow&tag=r,graphic&sort=maxKudos
URL: Hub:. more Python Graphics with KNIME https://hub.knime.com/search?type=Workflow&tag=python,graphic&sort=maxKudos
URL: KNIME and R — installation across operating systems — some remarks https://medium.com/p/6494a2a498cc
URL: Medium Blog: Exploring the Power of R Graphics with KNIME: A Collection of Examples https://medium.com/p/9241e033e4ac
URL: mtcars: Motor Trend Car Road Tests https://www.rdocumentation.org/packages/datasets/versions/3.6.2/topics/mtcars

cars.csv - data to be found here:

https://www.rdocumentation.org/packages/datasets/versions/3.6.2/topics/mtcars


The data was extracted from the 1974 Motor Trend US magazine, and comprises fuel consumption and 10 aspects of automobile design and performance for 32 automobiles (1973--74 models).


library(gplots)
library(stats)
library(RColorBrewer)

library(datasets)

KNIME and R — installation across operating systems — some remarks

https://medium.com/p/6494a2a498cc


Exploring the Power of R Graphics with KNIME: A Collection of Examples

https://medium.com/p/9241e033e4ac

mpg - Miles per gallon (fuel efficiency)

cyl - Number of cylinders in the engine

disp - Displacement (engine capacity) in cubic inches

hp - Gross horsepower

drat - Rear axle ratio

wt - Weight of the car (in 1000 lbs)

qsec - 1/4 mile time (time to travel a quarter mile) in seconds

vs - Engine shape (0 = V-shaped, 1 = straight)

am - Transmission type (0 = automatic, 1 = manual)

gear - Number of forward gears

carb - Number of carburetors


HeatMap (JFreeChart)
Heatmap (JavaScript)
cars.csv
CSV Reader
dendrogram_row.png
Image Writer (Port)
export_matrix
R to Table
col_matrix
R to Table
RowID
row_matrix
R to Table
dendrogram_col.png
Image Writer (Port)
create heatmap
R View (Workspace)
create dendrogram ROW
R View (Workspace)
create dendrogram COL
R View (Workspace)
compute heatmap valueschoose distance functions# Distance options: euclidean (default), maximum, canberra, binary, minkowski, manhattan# Cluster options: complete (default), single, average, mcquitty, median, centroid, ward
Table to R
heatmap.png
Image Writer (Port)
move label columnto front
Column Resorter
library(datasets)data("mtcars")
R Source (Table)
cars.csv
CSV Writer
mtcars.table
Table Writer
Domain Calculator

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