I have composed the following script for a clustered scatter plot with fviz_cluster. According to the plot, there are negative values for x and negative values
sifting-appender
b-plus-tree
xajax
imessage-extension
sysv-ipc
glut
gridpane
stdhash
domxpath
jasync-sql
gui-test-framework
excelr
patternfly
defaultifempty
pandapower
printer
websphere-portal
parametric-equations
redirect-uri-mismatch
spring-data-ldap
sqlapi++
maxent
postconstruct
iostat
quickreports
sql-view
bullseye
command-line
dependent-type
sql-server-profiler