well i have a data included two columns month->1,2,3...324 & SPI values positive & negative
ggplot(data = spi1_col,aes(x=month ,y=spi1))+
geom_bar(data = spi1_col,mapping = aes (x=month ,y=spi1),stat = "identity",
position = "stack", inherit.aes = "TRUE")
how can i show the whole 324 month in x axis and allocate two colors for negative and positive
values for the SPI?
Hi,
Try the next piece of code:
ggplot(data = spi1_col, aes(x = month , y = spi1))+
geom_bar(aes(fill = spi1>0), stat = "identity", show.legend = F)
Maybe this can help? https://ggplot2.tidyverse.org/reference/geom_bar.html
Hi Morteza Shabestari,
try p+ scale_x_continuous(breaks = seq(1:314)), with p the plot as recommended from Yevheniia Antoniuk
to show each month. still, space might be narrow.
one could also convert x to a date, using as.POSIXct(), then
scale_x_date(date_breaks = "months", date_labels = "%Y-%m")
hth, Marian
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