function refresh (showStyle){ //get data from the HTML form var myForm = document.ImageForm; var index = myForm.Product.selectedIndex; var typeid = myForm.Product[index].value; var imagetype=myForm.Product[index].id; var index = myForm.Region.selectedIndex; var regionid = myForm.Region[index].value; var rname=myForm.Region[index].id; var index = myForm.Year.selectedIndex; var year = myForm.Year[index].value; var index = myForm.Week.selectedIndex; var week = myForm.Week[index].value; //get the cuurent date from user computer var cur_week = getCurrentWeek(); var cur_year = getCurrentYear(); //adjust year & week based on different HTML button var isNeedResetYearWeek =0; if(showStyle == "showNextWeek") { week++; if(week > 52) { year++; week=1; } isNeedResetYearWeek = 1; } if(showStyle == "showPrevWeek") { week--; if(week <=0 ) { week=52; year--; } isNeedResetYearWeek = 1; } if(showStyle == "showNextYear") { year++; isNeedResetYearWeek = 1; } if(showStyle == "showPrevYear") { year--; isNeedResetYearWeek = 1; } var yrwk = year *100 + Math.round(week); var curYrwk = cur_year *100.0 + cur_week; if( yrwk < myForm.Year[1].value*100+1 || yrwk > curYrwk ) { alert("Data requested is not available, please check: year=" +year+" week="+week); return ; } if(typeid == 0) { alert(" Please select a data type"); return; }; if(regionid == 0) { alert(" Please select a region"); return; }; if(year == 0) { alert(" Please select a year"); return; }; if(week == 0) { alert(" Please select a week"); return; }; var bNodata=0; if(imagetype == "DIFF_VTI_YEARLY" && (yrwk < 198235) ) bNodata =1; if(imagetype == "DIFF_VTI_WEEKLY"&& (yrwk <= 198135) ) bNodata =1; if(imagetype == "DVT" && (yrwk <= 198139) ) bNodata =1; if( bNodata == 1){ alert("data requested is not available for this week: year=" +year+" week="+week); return ; } if( isNeedResetYearWeek == 1) { //alert("reset "+year+" "+ week); for(i=0; i< myForm.Week.length; i++){ if(myForm.Week[i].value == week) { myForm.Week[i].selected = true; break; } } for(i=0; i<= myForm.Year.length; i++){ if(myForm.Year[i].value == year) { myForm.Year[i].selected = true; break; } } } if( bNodata == 1){ parent.MainImageFrame.document.writeln("

" + "Sorry, the requested image is not available online.

" +""); parent.MainImageFrame.document.close(); return; } VH_showImages( rname,imagetype,typeid,year,week); } function VH_showImages( rname,imagetype,typeid,year,week){ var regionTitle = getRegionLongName(rname); var baseurl = getVHrootURL(); var regionnames = ["World","NorthAmerica","SouthAmerica","Africa","Europe","Asia","Australia", "USA", "Mexico", "Argentina","Brazil","SouthAfrica","Rusia","China","India","Ukraine"]; var imagetypes =["VHI","VHchangeWeekly","VHchangeYearly","VCI-TCI","SMN","SMT","FireRisk","VH_DIVISION","DroughtRisk", "ModerateDroughtChange","ExtremeDroughtChange","MalariaRisk"]; var NumberOfimages=[2,1,1,2,1,1,1,3,1,4,4,3]; var subfolder,Img_ext, yearweekPrevious_ext; if(year == -1) { subfolder="current"; Img_ext= ".png"; yearweekPrevious_ext="_Pyear.png"; }else{ subfolder=year; var sWeek = "" + week; if (week <= 9) sWeek= '0' +week; yearweek = year + sWeek; yearweekPrevious_ext = "_"+ (year-1) + sWeek +".png"; Img_ext= "_"+yearweek + ".png"; } var colorbar= getColorBarURL(imagetype ); var img_file1,img_file2,img_file3 ; var img_url1, img_url2,bimg_url1, bimg_url2; var prodTitles= getLongTitleOfDataType(imagetype); var prodTitle =prodTitles[0]; var prodTitle2=prodTitles[1]; var prodTitle3=prodTitles[2]; if( imagetype == "VH_DIVISION" && rname != "USA"){ alert(" Vegetation Health by Climate Division Map is available for USA only."); return; } if( imagetype == "MalariaRisk" && rname != "Africa"){ alert(" Malaria Risk Map is available for Africa only."); return; } if(imagetype == "VHI") { img_file1 = "VHI" + Img_ext; img_file2 = ""; }else if(imagetype == "VCI-TCI") { img_file1 = "VCI" + Img_ext; img_file2 = "TCI" + Img_ext; }else if(imagetype == "VH_DIVISION") { img_file1 = "VHI_DIVISION" + Img_ext; img_file2 = "VCI_DIVISION" + Img_ext; img_file3 = "TCI_DIVISION" + Img_ext; }else if(imagetype == "MalariaRisk") { img_file1 = "MalariaRisk_VHI" + Img_ext; img_file2 = "MalariaRisk_VCI" + Img_ext; img_file3 = "MalariaRisk_TCI" + Img_ext; }else{ img_file1 = imagetype + Img_ext; } var picturepath = baseurl + "/"+ subfolder +"/" + rname +"_"; img_url1 = picturepath + img_file1; img_url2 = picturepath + img_file2; img_url3 = picturepath + img_file3; if(imagetype == "VHI") { img_file2 = rname+ "_VHI"+yearweekPrevious_ext; if (year == -1){ img_url2=baseurl + "/current/"+img_file2; }else{ img_url2=baseurl + "/"+ (year-1) +"/"+img_file2; } } var picturepathBig = baseurl + "/"+ subfolder +"/" + rname+ "Big_" ; bimg_url1 = picturepathBig + img_file1; bimg_url2 = picturepathBig + img_file2; bimg_url3 = picturepathBig + img_file3; var colorbar = getColorBarURL(imagetype); var thisWeek = getCurrentWeek(); var thisYear = getCurrentYear(); parent.MainImageFrame.document.writeln("\n\n\n" // "" + "
"); var title1 = "

"+ regionTitle +" - "+ prodTitle +"

"; var title2 = "

"+ prodTitle2 +"

"; var title3 = "

"+ prodTitle3 +"

"; var img1 = ""+ regionTitle +" "+ prodTitle +" file="+ img_url1+""; var img2 = ""+ regionTitle +" "+ prodTitle +" file="+ img_url2+""; var img3 = ""+ regionTitle +" "+ prodTitle +" file="+ img_url3+""; if (rname == "World") { img1 = "" + img1 +"" ; img2 = "" + img2 +"" ; img3 = "" + img3 +"" ; } var s= ""; s+= ""; if(NumberOfimages[typeid-1] == 1) { s+= ""; } if(NumberOfimages[typeid-1] == 2) { s+= ""; s+= " "; } if(NumberOfimages[typeid-1] == 3) { s+= ""; s+= ""; s+= ""; s+= ""; s+= ""; } if(NumberOfimages[typeid-1] == 4) { //show 2x2 panels for 'ModerateDroughtChange' or 'ExtremeDroughtChange' var prodTitles = ["In 1 Week","In 4 Weeks","In 8 Weeks","In 52 Weeks"]; var imagenames = ["In1Week","In4Weeks","In8Weeks","In52Weeks"]; var imgs = [" "," "," "," "]; for (var i=0; i<4; i++){ img_url= picturepath + imagetype +imagenames[i] + Img_ext; imgs[i] = ""+ regionTitle +" " +prodTitles[i] +" file="+ img_url+""; prodTitles[i]= "
(Change " + prodTitles[i] + ")
 " } s+= "
" + title1 +"
" +img1 +"
" +img1 +"" +img2 +"
" +img1 +"
" + title2 +"
" +img2 +"
" + title3 +"
" +img3 +"
" ; s+= ""; s+= ""; s+= ""; s+= ""; s+= ""; s+= ""; s+= ""; } s+= "
"+ imgs[0]+ prodTitles[0] + ""+ imgs[1]+ prodTitles[1] + "
"+ imgs[2]+ prodTitles[2] + ""+ imgs[3]+ prodTitles[3] + "
"; if(colorbar != "") s += "color bar, file=" + colorbar +"
"; if( imagetype == 'ModerateDroughtChange' || imagetype == 'ExtremeDroughtChange') { colorbar = "../VH_colorbars/bar_DroughtChange_long.png"; s+= "color bar (detail), file=" + colorbar +"
"; } parent.MainImageFrame.document.writeln( s ); if (rname == "World") parent.MainImageFrame.document.writeln("

Click this image once to expand it;
" + "Click on the expand image to review maximum resolution.

"); if( imagetype != "Malariarisk") { parent.MainImageFrame.document.writeln("

" + "Note: For the area without vegetation (desert, high mountains, etc.), " + "the displayed indices characterize surface conditions.

"); } parent.MainImageFrame.document.writeln("

" + "*** Data source: GVI-x derived vegetation indices; 'week' defined here is based on 'day of the year', i.e. week 1 covers day-of-the-year 1 to 7.
" + "*** (Images will be updated on Thursday in 2009.)

"); parent.MainImageFrame.document.writeln(""); parent.MainImageFrame.document.close(); }