r - Why use as.factor() instead of just factor() - Stack Overflow
‘factor(x, exclude = NULL)’ applied to a factor without ‘NA’s is a no-operation unless there are unused levels: in that case, a factor with the reduced level set is returned. ‘as.factor’ coerces …
How to force R to use a specified factor level as reference in a ...
When creating the factor from b you can specify the ordering of the levels using factor(b, levels = c(3,1,2,4,5)). Do this in a data processing step outside the lm() call though. My answer below …
r - How to reorder factor levels in a tidy way? - Stack Overflow
Jul 17, 2017 · All arrange does is re-order rows, this has no effect on the levels of the factor and hence no effect on the order of a legend or axis in ggplot. All factors have an order for their …
r - Changing factor levels with dplyr mutate - Stack Overflow
Jan 28, 2015 · From my understanding, the currently accepted answer only changes the order of the factor levels, not the actual labels (i.e., how the levels of the factor are called). To illustrate …
r - summarizing counts of a factor with dplyr - Stack Overflow
Sep 12, 2014 · I want to group a data frame by a column (owner) and output a new data frame that has counts of each type of a factor at each observation. The real data frame is fairly large, …
Convert data.frame column format from character to factor
I would like to change the format (class) of some columns of my data.frame object (mydf) from charactor to factor. I don't want to do this when I'm reading the text file by read.table() function. ...
Subset a dataframe by multiple factor levels - Stack Overflow
How can I avoid using a loop to subset a dataframe based on multiple factor levels? In the following example my desired output is a dataframe. The dataframe should contain the rows of …
Pandas - make a column dtype object or Factor - Stack Overflow
Factor and Categorical are the same, as far as I know. I think it was initially called Factor, and then changed to Categorical. To convert to Categorical maybe you can use …
r - Mean by factor by level - Stack Overflow
Mar 13, 2017 · Maybe this is simple but I can't find answer on web. I have problem with mean calculation by factors by level. My data looks typicaly: factor, value a,1 a,2 b,1 b,1 b,1 c,1 I …
How to change the number of replicas of a Kafka topic?
Jun 22, 2016 · Option "[replication-factor]" can't be used with option"[alter]" It is funny that you can change number of partitions on the fly (which is often hugely destructive action when done in …