I am plotting a raster image in levelplot using R. since the sizes are small and not visible in pdf format I want to increase size of all written data. I am able to increase the size of all written data except the numbers on the lat-lon lines. how do it do it so its visible? code:
levelplot(temp1,margin=F,col.regions=my_colors,at=my.at, colorkey=list(at = my.at, labels = list(cex = 1)),
          main="Spatial plot",
          cex.main = 0.4,line = 1,
          xlab = list(label = "longitude (°E)", cex = 1.5), 
          ylab = list(label = "latitude (°N)", cex = 1.5),
          scales = list(cex.axis = 10))+
  latticeExtra::   layer(sp.polygons(SHP, lwd=2, col='black'))
