Panfeng Zhang

the x axis ticks does not show when using sf package to plot global map

12

--- The X axis ticks does not show when using the geom_sf function of sf package to plot the global map ```r library(sf) library(rnaturalearth) library(stars) library(ggplot2) wld

st_transform does not transform map projection correcttly in some situations

5

**Describe the bug** st_transform does not transform map projection correcttly in some situations. **To Reproduce** ```{r} library(sf) library(ggplot2) library(rnaturalearth) wld

Loop 0 is not valid: Edge 4441 crosses edge 4445

2

> library(sf) > cmap cmap2

The significant digits issue of legend in the wind vector chart.

2

The wind speed magnitude in the legend retains a lot of numbers after the decimal point. As shown in the following figure, the wind speed in the legend is 26.81044...

An error occurred while using the utcal.nc function to converte the time amounts to UTC date. The example of .nc data is from NCEP () ```r library(RNetCDF) diri = "C:/Rmet/data/slp.mon.ltm.1991-2020.nc"...

add a function gg_barbs to plot wind barbs

1

### Tips for a helpful feature request: In situations when draw wind vectors (or wind barbs) with python , I would like to be able to draw wind vectors (or...

An error occurred while using the st_get_dimension_values function to obtain the time

3

An error occurred while using the st_get_dimension_values function to obtain the time. The example of .nc data is from NCEP (https://psl.noaa.gov/thredds/fileServer/Datasets/ncep.reanalysis/Monthlies/surface/slp.mon.ltm.1991-2020.nc) ```r library(stars) diri