## Figures associated with MOD35 Cloud Mask Exploration

setwd("~/acrobates/adamw/projects/MOD35C5")

library(raster);beginCluster(10)

library(rasterVis)

library(rgdal)

library(plotKML)

library(Cairo)

library(reshape)

library(rgeos)

library(splancs)

## get % cloudy

mod09=raster("data/MOD09_2009.tif")

names(mod09)="C5MOD09CF"

NAvalue(mod09)=0

mod35c5=raster("data/MOD35_2009.tif")

names(mod35c5)="C5MOD35CF"

NAvalue(mod35c5)=0

## mod35C6 annual

if(!file.exists("data/MOD35C6_2009.tif")){

  system("/usr/local/gdal-1.10.0/bin/gdalbuildvrt  -a_srs '+proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007.181 +b=6371007.181 +units=m +no_defs' -sd 1 -b 1 data/MOD35C6.vrt `find /home/adamw/acrobates/adamw/projects/interp/data/modis/mod35/summary/ -name '*h[1]*_mean.nc'` ")

  system("align.sh data/MOD35C6.vrt data/MOD09_2009.tif data/MOD35C6_2009.tif")

}

mod35c6=raster("data/MOD35C6_2009_v1.tif")

names(mod35c6)="C6MOD35CF"

NAvalue(mod35c6)=255

## landcover

if(!file.exists("data/MCD12Q1_IGBP_2009_051_wgs84_1km.tif")){

  system(paste("/usr/local/gdal-1.10.0/bin/gdalwarp -tr 0.008983153 0.008983153 -r mode -ot Byte -co \"COMPRESS=LZW\"",

               " /mnt/data/jetzlab/Data/environ/global/MODIS/MCD12Q1/051/MCD12Q1_051_2009_wgs84.tif ",

               " -t_srs \"+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs\" ",

               " -te -180.0044166 -60.0074610 180.0044166 90.0022083 ",

               "data/MCD12Q1_IGBP_2009_051_wgs84_1km.tif -overwrite ",sep=""))}

lulc=raster("data/MCD12Q1_IGBP_2009_051_wgs84_1km.tif")

#  lulc=ratify(lulc)

  data(worldgrids_pal)  #load palette

  IGBP=data.frame(ID=0:16,col=worldgrids_pal$IGBP[-c(18,19)],

    lulc_levels2=c("Water","Forest","Forest","Forest","Forest","Forest","Shrublands","Shrublands","Savannas","Savannas","Grasslands","Permanent wetlands","Croplands","Urban and built-up","Cropland/Natural vegetation mosaic","Snow and ice","Barren or sparsely vegetated"),stringsAsFactors=F)

  IGBP$class=rownames(IGBP);rownames(IGBP)=1:nrow(IGBP)

  levels(lulc)=list(IGBP)

#lulc=crop(lulc,mod09)

names(lulc)="MCD12Q1"

## make land mask

if(!file.exists("data/land.tif"))

  land=calc(lulc,function(x) ifelse(x==0,NA,1),file="data/land.tif",options=c("COMPRESS=LZW","ZLEVEL=9","PREDICTOR=2"),datatype="INT1U",overwrite=T)

land=raster("data/land.tif")

## mask cloud masks to land pixels

#mod09l=mask(mod09,land)

#mod35l=mask(mod35,land)

#####################################

### compare MOD43 and MOD17 products

## MOD17

#extent(mod17)=alignExtent(mod17,mod09)

if(!file.exists("data/MOD17.tif"))

system("align.sh ~/acrobates/adamw/projects/interp/data/modis/MOD17/MOD17A3_Science_NPP_mean_00_12.tif data/MOD09_2009.tif data/MOD17.tif")

mod17=raster("data/MOD17.tif",format="GTiff")

NAvalue(mod17)=65535

names(mod17)="MOD17_unscaled"

if(!file.exists("data/MOD17qc.tif"))

  system("align.sh ~/acrobates/adamw/projects/interp/data/modis/MOD17/MOD17A3_Science_NPP_Qc_mean_00_12.tif data/MOD09_2009.tif data/MOD17qc.tif")

mod17qc=raster("data/MOD17qc.tif",format="GTiff")

NAvalue(mod17qc)=255

names(mod17qc)="MOD17CF"

## MOD11 via earth engine

if(!file.exists("data/MOD11_2009.tif"))

  system("align.sh ~/acrobates/adamw/projects/interp/data/modis/mod11/2009/MOD11_LST_2009.tif data/MOD09_2009.tif data/MOD11_2009.tif")

mod11=raster("data/MOD11_2009.tif",format="GTiff")

names(mod11)="MOD11_unscaled"

NAvalue(mod11)=0

if(!file.exists("data/MOD11qc_2009.tif"))

  system("align.sh ~/acrobates/adamw/projects/interp/data/modis/mod11/2009/MOD11_Pmiss_2009.tif data/MOD09_2009.tif data/MOD11qc_2009.tif")

mod11qc=raster("data/MOD11qc_2009.tif",format="GTiff")

names(mod11qc)="MOD11CF"

### Processing path

if(!file.exists("data/MOD35pp.tif"))

system("align.sh data/MOD35_ProcessPath.tif data/MOD09_2009.tif data/MOD35pp.tif")

pp=raster("data/MOD35pp.tif")

NAvalue(pp)=255

names(pp)="MOD35pp"

#hist(dif,maxsamp=1000000)

## draw lulc-stratified random sample of mod35-mod09 differences 

#samp=sampleStratified(lulc, 1000, exp=10)

#save(samp,file="LULC_StratifiedSample_10000.Rdata")

#mean(dif[samp],na.rm=T)

#Stats(dif,function(x) c(mean=mean(x),sd=sd(x)))

###

n=100

at=seq(0,100,len=n)

cols=grey(seq(0,1,len=n))

cols=rainbow(n)

bgyr=colorRampPalette(c("blue","green","yellow","red"))

cols=bgyr(n)

### Transects

r1=Lines(list(

  Line(matrix(c(

                -61.688,4.098,

                -59.251,3.430

                ),ncol=2,byrow=T))),"Venezuela")

r2=Lines(list(

  Line(matrix(c(

                133.746,-31.834,

                134.226,-32.143

                ),ncol=2,byrow=T))),"Australia")

r3=Lines(list(

  Line(matrix(c(

                73.943,27.419,

                74.369,26.877

                ),ncol=2,byrow=T))),"India")

#r4=Lines(list(

#  Line(matrix(c(

#                -5.164,42.270,

#                -4.948,42.162

#                ),ncol=2,byrow=T))),"Spain")

r5=Lines(list(

  Line(matrix(c(

                33.195,12.512,

                33.802,12.894

                ),ncol=2,byrow=T))),"Sudan")

#r6=Lines(list(

#  Line(matrix(c(

#                -63.353,-10.746,

#                -63.376,-9.310

#                ),ncol=2,byrow=T))),"Brazil")

trans=SpatialLines(list(r1,r2,r3,r5),CRS("+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs "))

### write out shapefiles of transects

writeOGR(SpatialLinesDataFrame(trans,data=data.frame(ID=names(trans)),match.ID=F),"output",layer="transects",driver="ESRI Shapefile",overwrite=T)

## buffer transects to get regional values 

transb=gBuffer(trans,byid=T,width=0.4)

## make polygons of bounding boxes

bb0 <- lapply(slot(transb, "polygons"), bbox)

bb1 <- lapply(bb0, bboxx)

# turn these into matrices using a helper function in splancs

bb2 <- lapply(bb1, function(x) rbind(x, x[1,]))

# close the matrix rings by appending the first coordinate

rn <- row.names(transb)

# get the IDs

bb3 <- vector(mode="list", length=length(bb2))

# make somewhere to keep the output

for (i in seq(along=bb3)) bb3[[i]] <- Polygons(list(Polygon(bb2[[i]])),

                   ID=rn[i])

# loop over the closed matrix rings, adding the IDs

bbs <- SpatialPolygons(bb3, proj4string=CRS(proj4string(transb)))

trd1=lapply(1:length(transb),function(x) {

  td=crop(mod11,transb[x])

  tdd=lapply(list(mod35c5,mod35c6,mod09,mod17,mod17qc,mod11,mod11qc,lulc,pp),function(l) resample(crop(l,transb[x]),td,method="ngb"))

  ## normalize MOD11 and MOD17

  for(j in which(do.call(c,lapply(tdd,function(i) names(i)))%in%c("MOD11_unscaled","MOD17_unscaled"))){

    trange=cellStats(tdd[[j]],range)

    tscaled=100*(tdd[[j]]-trange[1])/(trange[2]-trange[1])

    tscaled@history=list(range=trange)

    names(tscaled)=sub("_unscaled","",names(tdd[[j]]))

    tdd=c(tdd,tscaled)

  }

  return(brick(tdd))

})

## bind all subregions into single dataframe for plotting

trd=do.call(rbind.data.frame,lapply(1:length(trd1),function(i){

  d=as.data.frame(as.matrix(trd1[[i]]))

  d[,c("x","y")]=coordinates(trd1[[i]])

  d$trans=names(trans)[i]

  d=melt(d,id.vars=c("trans","x","y"))

  return(d)

}))

transd=do.call(rbind.data.frame,lapply(1:length(trans),function(l) {

  td=as.data.frame(extract(trd1[[l]],trans[l],along=T,cellnumbers=F)[[1]])

  td$loc=extract(trd1[[l]],trans[l],along=T,cellnumbers=T)[[1]][,1]

  td[,c("x","y")]=xyFromCell(trd1[[l]],td$loc)

  td$dist=spDistsN1(as.matrix(td[,c("x","y")]), as.matrix(td[1,c("x","y")]),longlat=T)

  td$transect=names(trans[l])

  td2=melt(td,id.vars=c("loc","x","y","dist","transect"))

  td2=td2[order(td2$variable,td2$dist),]

  # get per variable ranges to normalize

  tr=cast(melt.list(tapply(td2$value,td2$variable,function(x) data.frame(min=min(x,na.rm=T),max=max(x,na.rm=T)))),L1~variable)

  td2$min=tr$min[match(td2$variable,tr$L1)]

  td2$max=tr$max[match(td2$variable,tr$L1)]

  print(paste("Finished ",names(trans[l])))

  return(td2)}

  ))

transd$type=ifelse(grepl("MOD35|MOD09|CF",transd$variable),"CF","Data")

## comparison of % cloudy days

if(!file.exists("data/dif_c5_09.tif"))

  overlay(mod35c5,mod09,fun=function(x,y) {return(x-y)},file="data/dif_c5_09.tif",format="GTiff",options=c("COMPRESS=LZW","ZLEVEL=9"),overwrite=T)

dif_c5_09=raster("data/dif_c5_09.tif",format="GTiff")

#dif_c6_09=mod35c6-mod09

#dif_c5_c6=mod35c5-mod35c6

## exploring various ways to compare cloud products along landcover or processing path edges

#t1=trd1[[1]]

#dif_p=calc(trd1[[1]], function(x) (x[1]-x[3])/(1-x[1]))

#edge=calc(edge(subset(t1,"MCD12Q1"),classes=T,type="inner"),function(x) ifelse(x==1,1,NA))

#edgeb=buffer(edge,width=5000)

#edgeb=calc(edgeb,function(x) ifelse(is.na(x),0,1))

#names(edge)="edge"

#names(edgeb)="edgeb"

#td1=as.data.frame(stack(t1,edge,edgeb))

#cor(td1$MOD17,td1$C6MOD35,use="complete",method="spearman")

#cor(td1$MOD17[td1$edgeb==1],td1$C5MOD35[td1$edgeb==1],use="complete",method="spearman")

### Correlations

#trdw=cast(trd,trans+x+y~variable,value="value")

#cor(trdw$MOD17,trdw$C5MOD35,use="complete",method="spearman")

#Across all pixels in the four regions analyzed in Figure 3 there is a much larger correlation between mean NPP and the C5 MOD35 CF (Spearman’s ρ = -0.61, n=58,756) than the C6 MOD35 CF (ρ = 0.00, n=58,756) or MOD09 (ρ = -0.07, n=58,756) products.  

#by(trdw,trdw$trans,function(x) cor(as.data.frame(na.omit(x[,c("C5MOD35CF","C6MOD35CF","C5MOD09CF","MOD17","MOD11")])),use="complete",method="spearman"))

## table of correlations

#trdw_cor=as.data.frame(na.omit(trdw[,c("C5MOD35CF","C6MOD35CF","C5MOD09CF","MOD17","MOD11")]))

#nrow(trdw_cor)

#round(cor(trdw_cor,method="spearman"),2)

## set up some graphing parameters

at=seq(0,100,leng=100)

bgyr=colorRampPalette(c("purple","blue","green","yellow","orange","red","red"))

bgrayr=colorRampPalette(c("purple","blue","grey","red","red"))

cols=bgyr(100)

## global map

library(maptools)

coast=map2SpatialLines(map("world", interior=FALSE, plot=FALSE),proj4string=CRS("+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs"))

g1=levelplot(stack(mod35c5,mod09),xlab=" ",scales=list(x=list(draw=F),y=list(alternating=1)),col.regions=cols,at=at)+layer(sp.polygons(bbs[1:4],lwd=2))+layer(sp.lines(coast,lwd=.5))

g2=levelplot(dif_c5_09,col.regions=bgrayr(100),at=seq(-70,70,len=100),margin=F,ylab=" ",colorkey=list("right"))+layer(sp.polygons(bbs[1:4],lwd=2))+layer(sp.lines(coast,lwd=.5))

g2$strip=strip.custom(var.name="Difference (C5MOD35-C5MOD09)",style=1,strip.names=T,strip.levels=F)  #update strip text

#g3=histogram(dif_c5_09,col="black",border=NA,scales=list(x=list(at=c(-50,0,50)),y=list(draw=F),cex=1))+layer(panel.abline(v=0,col="red",lwd=2))

### regional plots

p1=useOuterStrips(levelplot(value~x*y|variable+trans,data=trd[!trd$variable%in%c("MOD17_unscaled","MOD11_unscaled","MCD12Q1","MOD35pp"),],asp=1,scales=list(draw=F,rot=0,relation="free"),

                                       at=at,col.regions=cols,maxpixels=7e6,

                                       ylab="Latitude",xlab="Longitude"),strip = strip.custom(par.strip.text=list(cex=.7)))+layer(sp.lines(trans,lwd=2))

p2=useOuterStrips(

  levelplot(value~x*y|variable+trans,data=trd[trd$variable%in%c("MCD12Q1"),],

            asp=1,scales=list(draw=F,rot=0,relation="free"),colorkey=F,

            at=c(-1,IGBP$ID),col.regions=IGBP$col,maxpixels=7e7,

            legend=list(

              right=list(fun=draw.key(list(columns=1,#title="MCD12Q1 \n IGBP Land \n Cover",

                           rectangles=list(col=IGBP$col,size=1),

                           text=list(as.character(IGBP$ID),at=IGBP$ID-.5))))),

            ylab="",xlab=" "),strip = strip.custom(par.strip.text=list(cex=.7)),strip.left=F)+layer(sp.lines(trans,lwd=2))

p3=useOuterStrips(

  levelplot(value~x*y|variable+trans,data=trd[trd$variable%in%c("MOD35pp"),],

            asp=1,scales=list(draw=F,rot=0,relation="free"),colorkey=F,

            at=c(-1:4),col.regions=c("blue","cyan","tan","darkgreen"),maxpixels=7e7,

            legend=list(

              right=list(fun=draw.key(list(columns=1,#title="MOD35 \n Processing \n Path",

                           rectangles=list(col=c("blue","cyan","tan","darkgreen"),size=1),

                           text=list(c("Water","Coast","Desert","Land")))))),

            ylab="",xlab=" "),strip = strip.custom(par.strip.text=list(cex=.7)),strip.left=F)+layer(sp.lines(trans,lwd=2))

## transects

p4=xyplot(value~dist|transect,groups=variable,type=c("smooth","p"),

       data=transd,panel=function(...,subscripts=subscripts) {

         td=transd[subscripts,]

         ## mod09

         imod09=td$variable=="C5MOD09CF"

         panel.xyplot(td$dist[imod09],td$value[imod09],type=c("p","smooth"),span=0.2,subscripts=1:sum(imod09),col="red",pch=16,cex=.25)

         ## mod35C5

         imod35=td$variable=="C5MOD35CF"

         panel.xyplot(td$dist[imod35],td$value[imod35],type=c("p","smooth"),span=0.09,subscripts=1:sum(imod35),col="blue",pch=16,cex=.25)

         ## mod35C6

         imod35c6=td$variable=="C6MOD35CF"

         panel.xyplot(td$dist[imod35c6],td$value[imod35c6],type=c("p","smooth"),span=0.09,subscripts=1:sum(imod35c6),col="black",pch=16,cex=.25)

         ## mod17

         imod17=td$variable=="MOD17"

         panel.xyplot(td$dist[imod17],100*((td$value[imod17]-td$min[imod17][1])/(td$max[imod17][1]-td$min[imod17][1])),

                      type=c("smooth"),span=0.09,subscripts=1:sum(imod17),col="darkgreen",lty=5,pch=1,cex=.25)

         imod17qc=td$variable=="MOD17CF"

         panel.xyplot(td$dist[imod17qc],td$value[imod17qc],type=c("p","smooth"),span=0.09,subscripts=1:sum(imod17qc),col="darkgreen",pch=16,cex=.25)

         ## mod11

         imod11=td$variable=="MOD11"

         panel.xyplot(td$dist[imod11],100*((td$value[imod11]-td$min[imod11][1])/(td$max[imod11][1]-td$min[imod11][1])),

                      type=c("smooth"),span=0.09,subscripts=1:sum(imod17),col="orange",lty="dashed",pch=1,cex=.25)

         imod11qc=td$variable=="MOD11CF"

         qcspan=ifelse(td$transect[1]=="Australia",0.2,0.05)

         panel.xyplot(td$dist[imod11qc],td$value[imod11qc],type=c("p","smooth"),npoints=100,span=qcspan,subscripts=1:sum(imod11qc),col="orange",pch=16,cex=.25)

         ## land

         path=td[td$variable=="MOD35pp",]

         panel.segments(path$dist,-10,c(path$dist[-1],max(path$dist,na.rm=T)),-10,col=c("blue","cyan","tan","darkgreen")[path$value+1],subscripts=1:nrow(path),lwd=10,type="l")

         land=td[td$variable=="MCD12Q1",]

         panel.segments(land$dist,-20,c(land$dist[-1],max(land$dist,na.rm=T)),-20,col=IGBP$col[land$value+1],subscripts=1:nrow(land),lwd=10,type="l")

        },subscripts=T,par.settings = list(grid.pars = list(lineend = "butt")),

       scales=list(

         x=list(alternating=1,relation="free"),#, lim=c(0,70)),

         y=list(at=c(-18,-10,seq(0,100,len=5)),

           labels=c("MCD12Q1 IGBP","MOD35 path",seq(0,100,len=5)),

           lim=c(-25,100)),

         alternating=F),

       xlab="Distance Along Transect (km)", ylab="% Missing Data / % of Maximum Value",

       legend=list(

         bottom=list(fun=draw.key(list( rep=FALSE,columns=1,title=" ",

                      lines=list(type=c("b","b","b","b","b","l","b","l"),pch=16,cex=.5,

                        lty=c(0,1,1,1,1,5,1,5),

                        col=c("transparent","red","blue","black","darkgreen","darkgreen","orange","orange")),

                       text=list(

                         c("MODIS Products","C5 MOD09 % Cloudy","C5 MOD35 % Cloudy","C6 MOD35 % Cloudy","MOD17 % Missing","MOD17 (scaled)","MOD11 % Missing","MOD11 (scaled)")),

                       rectangles=list(border=NA,col=c(NA,"tan","darkgreen")),

                       text=list(c("C5 MOD35 Processing Path","Desert","Land")),

                       rectangles=list(border=NA,col=c(NA,IGBP$col[sort(unique(transd$value[transd$variable=="MCD12Q1"]+1))])),

                       text=list(c("MCD12Q1 IGBP Land Cover",IGBP$class[sort(unique(transd$value[transd$variable=="MCD12Q1"]+1))])))))),

  strip = strip.custom(par.strip.text=list(cex=.75)))

print(p4)

CairoPDF("output/mod35compare.pdf",width=11,height=7)

#CairoPNG("output/mod35compare_%d.png",units="in", width=11,height=8.5,pointsize=4000,dpi=1200,antialias="subpixel")

### Global Comparison

print(g1,position=c(0,.35,1,1),more=T)

print(g2,position=c(0,0,1,0.415),more=F)

#print(g3,position=c(0.31,0.06,.42,0.27),more=F)

### MOD35 Desert Processing path

levelplot(pp,asp=1,scales=list(draw=T,rot=0),maxpixels=1e6,

          at=c(-1:3),col.regions=c("blue","cyan","tan","darkgreen"),margin=F,

          colorkey=list(space="bottom",title="MOD35 Processing Path",labels=list(labels=c("Water","Coast","Desert","Land"),at=0:4-.5)))+layer(sp.polygons(bbs,lwd=2))+layer(sp.lines(coast,lwd=.5))

### levelplot of regions

print(p1,position=c(0,0,.62,1),more=T)

print(p2,position=c(0.6,0.21,0.78,0.79),more=T)

print(p3,position=c(0.76,0.21,1,0.79))

### profile plots

print(p4)

dev.off()

### summary stats for paper

td=cast(transect+loc+dist~variable,value="value",data=transd)

td2=melt.data.frame(td,id.vars=c("transect","dist","loc","MOD35pp","MCD12Q1"))

## function to prettyprint mean/sd's

msd= function(x) paste(round(mean(x,na.rm=T),1),"% ±",round(sd(x,na.rm=T),1),sep="")

cast(td2,transect+variable~MOD35pp,value="value",fun=msd)

cast(td2,transect+variable~MOD35pp+MCD12Q1,value="value",fun=msd)

cast(td2,transect+variable~.,value="value",fun=msd)

cast(td2,transect+variable~.,value="value",fun=msd)

cast(td2,variable~MOD35pp,value="value",fun=msd)

cast(td2,variable~.,value="value",fun=msd)

td[td$transect=="Venezuela",]

#### export KML

library(plotKML)

kml_open("output/modiscloud.kml")

readAll(mod35c5)

kml_layer.Raster(mod35c5,

     plot.legend = TRUE,raster_name="Collection 5 MOD35 Cloud Frequency",

    z.lim = c(0,100),colour_scale = get("colour_scale_numeric", envir = plotKML.opts),

#    home_url = get("home_url", envir = plotKML.opts),

#    metadata = NULL, html.table = NULL,

    altitudeMode = "clampToGround", balloon = FALSE

)

system(paste("gdal_translate -of KMLSUPEROVERLAY ",mod35c5@file@name," output/mod35c5.kmz -co FORMAT=JPEG"))

logo = "http://static.tumblr.com/t0afs9f/KWTm94tpm/yale_logo.png"

kml_screen(image.file = logo, position = "UL", sname = "YALE logo",size=c(.1,.1))

kml_close("modiscloud.kml")

kml_compress("modiscloud.kml",files=c(paste(month.name,".png",sep=""),"obj_legend.png"),zip="/usr/bin/zip")