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فيديو شرح How to draw Heat Map in R language ? ضمن كورس لغة R شرح قناة Unboxing Big Data، الفديو رقم 32 مجانى معتمد اونلاين
One can build in base R, using the heatmap() function with no parameters.
Note that it takes as input a matrix.
If you have a data frame, you can convert it to a matrix with as.matrix(), but you need numeric variables only.
each column is a variable.
Each observation is a row.
Each square is a value.