This python script reads the Tab Separated text file extracted from the Excel file provided by Lake Partner Program and create one text to be converted to feature class, one text for secchi depth data and one txt file for total phosphorus.
import math
class LakePartnerStation:
def __init__(self, Lake, Township, STN, SiteID, SiteDescription, Latitude, Longitude):
self.Lake = Lake
self.Township = Township
self.STN = STN
self.SiteID = SiteID
self.SiteDescription = SiteDescription
self.Latitude = Latitude
self.Longitude = Longitude
self.secchiDepthDict = {}
self.tpDict = []
def convertLatLngToUTM(self, lat, lng):
if (lat < 0.0001):
return "0\t0\t0"
pi = 3.14159265358979; #PI
a = 6378137; #equatorial radius for WGS 84
k0 = 0.9996; #scale factor
e = 0.081819191; #eccentricity
e_2 = 0.006694380015894481; #e'2
A0 = 6367449.146;
B0 = 16038.42955;
C0 = 16.83261333;
D0 = 0.021984404;
E0 = 0.000312705;
zone = 31 + math.floor(lng / 6);
lat_r = lat * pi / 180.0;
t1 = math.sin(lat_r); # SIN(LAT)
t2 = e * t1 * e * t1;
t3 = math.cos(lat_r); # COS(LAT)
t4 = math.tan(lat_r); # TAN(LAT)
nu = a / (math.sqrt(1 - t2));
S = A0 * lat_r - B0 * math.sin(2 * lat_r) + C0 * math.sin(4 * lat_r) - D0 * math.sin(6 * lat_r) + E0 * math.sin(8 * lat_r);
k1 = S * k0;
k2 = nu * t1 * t3 * k0 / 2.0;
k3 = ((nu * t1 * t2 * t2 * t2) / 24) * (5 - t4 * t4 + 9 * e_2 * t3 * t3 + 4 * e_2 * e_2 * t3 * t3 * t3 * t3) * k0;
k4 = nu * t3 * k0;
k5 = t3 * t3 * t3 * (nu / 6) * (1 - t4 * t4 + e_2 * t3 * t3) * k0;
#var lng_r = lng*pi/180.0;
lng_zone_cm = 6 * zone - 183;
d1 = (lng - lng_zone_cm) * pi / 180.0;
d2 = d1 * d1;
d3 = d2 * d1;
d4 = d3 * d1;
x = 500000 + (k4 * d1 + k5 * d3);
rawy = (k1 + k2 * d2 + k3 * d4);
y = rawy;
if (y < 0): y = y + 10000000; return str(int(zone)) + "\t" + str(x) + "\t" + str(y); def strWithUTM(self): id = self.STN * 10000 + self.SiteID return str(id) + "\t" + self.Lake + "\t" + self.Township + "\t" + str(self.STN) + "\t" + str(self.SiteID) + "\t" + self.SiteDescription + "\t" + str(self.Latitude) + "\t" + str(self.Longitude) + "\t" + str(len(self.secchiDepthDict)) + "\t" + str(len(self.tpDict)) + "\t" + self.convertLatLngToUTM(self.Latitude, self.Longitude) def __str__(self): id = self.STN * 10000 + self.SiteID if len(self.secchiDepthDict) > 0:
self.getSecchiDepthString()
if len(self.tpDict) > 0:
self.getTPString()
return str(id) + "\t" + self.Lake + "\t" + self.Township + "\t" + str(self.STN) + "\t" + str(self.SiteID) + "\t" + self.SiteDescription + "\t" + str(self.Latitude) + "\t" + str(self.Longitude) + "\t" + str(len(self.secchiDepthDict)) + "\t" + str(len(self.tpDict)) + "\t" + 'http://www.downloads.ene.gov.on.ca/files/mapping/LakePartner/TP/TP_EN_' + str(id) + '.html' + "\t" + 'http://www.downloads.ene.gov.on.ca/files/mapping/LakePartner/TP/TP_FR_' + str(id) + '.html' + "\t" + 'http://www.downloads.ene.gov.on.ca/files/mapping/LakePartner/SECCHI/SECCHI_EN_' + str(id) + '.html' + "\t" + 'http://www.downloads.ene.gov.on.ca/files/mapping/LakePartner/SECCHI/SECCHI_FR_' + str(id) + '.html'
#return self.getTPString()
def getSecchiDepthTable(self):
id = self.STN * 10000 + self.SiteID
result = ""
for key, value in self.secchiDepthDict.items():
result = result + str(self.STN) + "\t" + str(self.SiteID) + "\t" + key + "\t" + value + "\t" + str(id) + "\n"
return result
def getSecchiDepthString(self):
id = self.STN * 10000 + self.SiteID
result = ""
for key in sorted(self.secchiDepthDict.iterkeys()):
value = self.secchiDepthDict[key]
result = result + "{year:" + key + ", value: " + value + "},"
#for key, value in self.secchiDepthDict.items():
# result = result + "{year:" + key + ", value: " + value + "},"
result = "var dataArray = [" + result[:-1] + "];"
for lang in ["EN", "FR"]:
text_file = open("template_" + lang + "_SECCHI.htm", "r")
template = text_file.read()
text_file.close()
#template = template.replace("${ID}", str(id))
template = template.replace('<script type="text/javascript" src="secchi_${ID}.js"></script>', '<script type="text/javascript">// <![CDATA[
\n\t\t' + result + '\n\t
// ]]></script>')
template = template.replace("${LAKENAME}", self.Lake)
template = template.replace("${STN}", str(self.STN))
template = template.replace("${SITEID}", str(self.SiteID))
template = template.replace("${SITEDESC}", self.SiteDescription)
handle1 = open("SECCHI/SECCHI_" + lang + "_" + str(id) + ".html",'w+')
handle1.write(template)
handle1.close();
def addSecchiDepth (self, Year, SecchiDepth):
if self.secchiDepthDict.has_key(Year):
raise ValueError('The year %s has duplicated secchi depth %s and %s in station %s.' % (Year, SecchiDepth, self.secchiDepthDict[Year], str(self.STN) + " - " + str(self.SiteID)))
self.secchiDepthDict[Year] = SecchiDepth
def convertDate(self, inputDate):
#27-Jun-11
items = inputDate.split("-")
if (int(items[2]) > 50):
print "Error\n"
year = "20" + items[2]
day = items[0]
monthList = {"Jan": "01", "Feb": "02", "Mar": "03", "Apr": "04", "May": "05", "Jun": "06", "Jul": "07", "Aug": "08", "Sep": "09", "Oct": "10", "Nov": "11", "Dec": "12"};
month = monthList[items[1]]
return year + "-" + month + "-" + day
def getTPString(self):
id = self.STN * 10000 + self.SiteID
result = ""
for value in self.tpDict:
items = value.split("\t")
result = result + "{date:'" + self.convertDate(items[0]) + "', tp1: " + items[1] + ", tp2: " + items[2] + "},"
result = "var dataArray = [" + result[:-1] + "];"
for lang in ["EN", "FR"]:
text_file = open("template_" + lang + "_TP.htm", "r")
template = text_file.read()
text_file.close()
#template = template.replace("${ID}", str(id))
template = template.replace('<script type="text/javascript" src="tp_${ID}.js"></script>', '<script type="text/javascript">// <![CDATA[
\n\t\t' + result + '\n\t
// ]]></script>')
template = template.replace("${LAKENAME}", self.Lake)
template = template.replace("${STN}", str(self.STN))
template = template.replace("${SITEID}", str(self.SiteID))
template = template.replace("${SITEDESC}", self.SiteDescription)
handle1 = open("TP/TP_" + lang + "_" + str(id) + ".html",'w+')
handle1.write(template)
handle1.close();
def addTP (self, date, tpValues):
#if self.tpDict.has_key(date):
#raise ValueError('The year %s has duplicated secchi depth %s and %s in station %s.' % (date, tpValues, self.tpDict[date], str(self.STN) + " - " + str(self.SiteID)))
# print str(self.STN) + " - " + str(self.SiteID) + " - " + date
#self.tpDict[date] = tpValues
self.tpDict.append(date + "\t" + tpValues)
def getTPTable(self):
id = self.STN * 10000 + self.SiteID
result = ""
for value in self.tpDict:
result = result + str(self.STN) + "\t" + str(self.SiteID) + "\t" + value + "\t" + str(id) + "\n"
return result
class LakePartner:
def __init__(self, secchiDepthFile, tpFile):
self.LakePartnerStations = {}
import fileinput
i = 0
for line in fileinput.input(secchiDepthFile):
i = i + 1
if i < 3: continue items = line.strip().split("\t") STN = int(items[2]) SiteID = int(items[3]) id = STN * 10000 + SiteID if self.LakePartnerStations.has_key(id): self.LakePartnerStations[id].addSecchiDepth(items[7], items[8]) else: Lake = items[0] Township = items[1] SiteDescription = items[4] Latitude = self.parseDegree(items[5]) Longitude = -self.parseDegree(items[6]) if Longitude > -70 or id == 47140002:
Latitude = 0
Longitude = 0
station = LakePartnerStation(Lake, Township, STN, SiteID, SiteDescription, Latitude, Longitude)
#if id == 71680001:
# print station.strWithUTM()
station.addSecchiDepth(items[7], items[8])
self.LakePartnerStations[id] = station
i = 0
for line in fileinput.input(tpFile):
i = i + 1
if i < 9: continue #print line items = line.strip().split("\t") STN = int(items[2]) SiteID = int(items[3]) id = STN * 10000 + SiteID if self.LakePartnerStations.has_key(id): self.LakePartnerStations[id].addTP(items[7], items[8] + "\t" + items[9]) else: Lake = items[0] Township = items[1] SiteDescription = items[4] Latitude = self.parseDegree(items[5]) Longitude = -self.parseDegree(items[6]) if Longitude > -70:
Latitude = 0
Longitude = 0
station = LakePartnerStation(Lake, Township, STN, SiteID, SiteDescription, Latitude, Longitude)
station.addTP(items[7], items[8] + "\t" + items[9])
self.LakePartnerStations[id] = station
#print items
def parseDegree(self, ddmmss):
if len(ddmmss.strip()) == 0:
return 0
d = int(ddmmss[:2])
m = int(ddmmss[2:4])
s = int(ddmmss[4:])
return d + m/60.0 + s/3600.0
def strWithUTM(self):
result = "ID\tLAKENAME\tTOWNSHIP\tSTN\tSITEID\tSITEDESC\tLATITUDE\tLONGITUDE\tSE_COUNT\tPH_COUNT\tZONE\tEASTING\tNORTHING\n"
for key, value in self.LakePartnerStations.items():
result = result + value.strWithUTM() + "\n"
return result
def __str__(self):
result = "ID\tLAKENAME\tTOWNSHIP\tSTN\tSITEID\tSITEDESC\tLATITUDE\tLONGITUDE\tSE_COUNT\tPH_COUNT\tTP_URL_EN\tTP_URL_FR\tSE_URL_EN\tSE_URL_FR\n"
for key, value in self.LakePartnerStations.items():
result = result + str(value) + "\n"
return result
def getTable(self):
handle1 = open("secchiDepth1.txt",'w+')
result = "STN\tSITEID\tYEAR_\tSECCI\tID\n"
for key, value in self.LakePartnerStations.items():
result = result + value.getSecchiDepthTable()
handle1.write(result)
handle1.close();
handle1 = open("TP1.txt",'w+')
result = "STN\tSITEID\tDATE_\tTP1\tTP2\tID\n"
for key, value in self.LakePartnerStations.items():
result = result + value.getTPTable()
handle1.write(result)
handle1.close();
return result
if __name__ == "__main__":
stations = LakePartner('SecchiDepth.txt', 'TP.txt')
handle1 = open("1.txt",'w+')
handle1.write(str(stations))
handle1.close();
stations.getTable();
#os.system("1.py")
template_EN_SECCHI.htm
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<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript" src="secchi_${ID}.js"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Year');
data.addColumn('number', 'Secchi Depth (m)');
data.addRows(dataArray.length+1);
for (var i=0; i<dataArray.length+1; i++){
if(i == 0){
var year = "" + (dataArray[0].year - 1)
data.setValue(0, 0, year);
data.setValue(0, 1, 0);
}else{
data.setValue(i, 0, "" + dataArray[i-1].year );
data.setValue(i, 1, dataArray[i-1].value);
}
}
var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
chart.draw(data, {width: 700, height: 480, colors:['#d4bfff'],
hAxis: {title: 'Year', titleColor:'black'}, vAxis: {title: 'Secchi Depth (m)', minValue: 0.0}
});
}
window.onload = function (){
var str = " <table class='lakepartner' border='1'><tr><th><center>Year</center></th><th><center>Secchi Depth (meters)</center></th></tr><tr><td>";
strArray = [];
for (var i=0; i<dataArray.length; i++){
strArray.push(dataArray[i].year + "</td><td><center>" + dataArray[i].value);
}
document.getElementById("data_table").innerHTML = str + strArray.join("</center></td></tr><tr><td>") + "</center></td></tr></table>";
}
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<h1>${LAKENAME} (STN ${STN}, Site ID ${SITEID})</h1>
<strong>${SITEDESC}</strong>
<p>The Lake Partner Program is a province-wide, volunteer-based, water-quality monitoring program. Volunteers collect total phosphorus samples and make monthly water clarity observations on their lakes. This information will allow the early detection of changes in the nutrient status and/or the water clarity of the lake due to the impacts of shoreline development, climate change and other stresses.</p><p>Approximately 800 active volunteers monitor total phosphorus at 728 locations in the lakes across Ontario.</p><p>Increases in phosphorus can decrease water clarity by stimulating algal growth. However, the amount of phosphorus in the lake is not the only factor controlling light penetration, as the amount of dissolved organic carbon (DOC) or non-biological turbidity also plays an important role. Water clarity can also be altered by invading species such as zebra mussels. It is always best, therefore, to use total phosphorus to evaluate the nutrient status of the lake. Nonetheless, water clarity readings are useful for tracking changes in the lake that might be occurring that would not be noticed by monitoring TP concentration alone, e.g. zebra mussel invasions.</p><p><a href="JavaScript:window.print();">Print this page</a></p> <center><h3>Water Transparency (Secchi Depth in meters)</h3></center><center><div id="chart_div"></div><br>
<br><h3>Water Transparency (Secchi Depth in meters)</h3>
<div id="data_table"></div>
</center>
<br><br>If you have some suggestions or find some errors, please send an Email to <a href='mailto:lakepartner@ontario.ca?subject=Portal Error Submission'>lakepartner@ontario.ca</a>.
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table.lakepartner th { background-color: #666; color: #FFF; padding: 3px; }
table.lakepartner td { padding: 3px; }</style>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript" src="secchi_${ID}.js"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Année');
data.addColumn('number', 'Mesure du disque Secchi (m)');
data.addRows(dataArray.length+1);
for (var i=0; i<dataArray.length+1; i++){
if(i == 0){
var year = "" + (dataArray[0].year - 1)
data.setValue(0, 0, year);
data.setValue(0, 1, 0);
}else{
data.setValue(i, 0, "" + dataArray[i-1].year );
data.setValue(i, 1, dataArray[i-1].value);
}
}
var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
chart.draw(data, {width: 700, height: 480, colors:['#d4bfff'],
hAxis: {title: 'Année', titleColor:'black'}, vAxis: {title: 'Mesure du disque Secchi (m)', minValue: 0.0}
});
}
window.onload = function (){
var str = " <table class='lakepartner' border='1'><tr><th><center>Année</center></th><th><center>Mesure du disque Secchi (m)</center></th></tr><tr><td>";
strArray = [];
for (var i=0; i<dataArray.length; i++){
strArray.push(dataArray[i].year + "</td><td><center>" + dataArray[i].value);
}
document.getElementById("data_table").innerHTML = str + strArray.join("</center></td></tr><tr><td>") + "</center></td></tr></table>";
}
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<h1>${LAKENAME} (STN ${STN}, N° du lieu ${SITEID})</h1>
<strong>${SITEDESC}</strong>
<p>Le Partenariat pour la protection des lacs ontariens est un programme de surveillance de la qualitĂ© de lâeau qui fait appel Ă des bĂ©nĂ©voles de toute la province. Les bĂ©nĂ©voles recueillent des Ă©chantillons dâeau dâun lac pour mesurer sa teneur en phosphore total et notent chaque mois des donnĂ©es sur la transparence de lâeau. Ces donnĂ©es permettent de noter rapidement les changements dans l'Ă©quilibre nutritif ou la transparence de l'eau du lac, qu'ils soient liĂ©s Ă l'amĂ©nagement des berges, au changement climatique ou Ă dâautres sources de perturbation.</p><p>Quelque 800 bĂ©nĂ©voles Ă©valuent la teneur en phosphore total de lâeau des lacs de lâOntario dans 728 lieux.</p><p>Une teneur Ă©levĂ©e en phosphore peut faire baisser la transparence de lâeau, car le phosphore stimule la croissance des algues. Cependant, la quantitĂ© de phosphore nâest pas le seul facteur qui altĂšre la pĂ©nĂ©tration de la lumiĂšre dans le lac, car la quantitĂ© de carbone organique dissous (COD) ou de turbiditĂ© non biologique peuvent aussi ĂȘtre en cause. La transparence de lâeau peut aussi ĂȘtre altĂ©rĂ©e par des espĂšces envahissantes, comme les moules zĂ©brĂ©es. Par consĂ©quent, il est toujours prĂ©fĂ©rable dâĂ©valuer lâĂ©quilibre nutritif dâun lac en mesurant la teneur en phosphore total de lâeau. NĂ©anmoins, il est utile de mesurer la transparence de lâeau pour noter les changements qui ne pourraient pas ĂȘtre dĂ©celĂ©s par la seule mesure de la teneur en phosphore total, comme une invasion de moules zĂ©brĂ©es.</p><p><a href="JavaScript:window.print();">Imprimer cette page</a></p> <center><h3>Transparence de l'eau (profondeur en mĂštres dâaprĂšs le disque Secchi)</h3></center><center><div id="chart_div"></div><br> <br><h3>Transparence de l'eau (profondeur en mĂštres dâaprĂšs le disque Secchi)</h3>
<div id="data_table"></div>
</center>
<br><br>Si vous avez des suggestions ou trouvez des erreurs, envoyez un courriel Ă <a href='mailto:lakepartner@ontario.ca?subject=Erreur de Portail'>lakepartner@ontario.ca</a>.
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template_EN_TP.htm
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<TITLE>Average Total Phosphorus (TP) Concentration (µg/L)</TITLE>
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document.getElementsByTagName('html')[0].className = 'js';
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<style type="text/css">
.lakepartner { width:700px; margin-right:-3px; border-spacing:1px; border-collapse:separate !important; border:1px #000000 solid; }
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<style type="text/css">table.lakepartner { border-collapse: collapse; border-color: #000; }
table.lakepartner th { background-color: #666; color: #FFF; padding: 3px; }
table.lakepartner td { padding: 3px; }</style>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript" src="tp_${ID}.js"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function greekSymbol(str) {return String.fromCharCode(str.charCodeAt(0) + (913 - 65));}
function getAverage(tp1, tp2){
var value = 0;
if((typeof(tp1) != "undefined") && (typeof(tp2) != "undefined")){
value = 0.5*(tp1 + tp2);
}else{
if((typeof(tp1) != "undefined")){
value = tp1;
}
if((typeof(tp2) != "undefined")){
value = tp2;
}
}
return parseFloat(value.toFixed(2));
//return value;
}
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Date');
data.addColumn('number', 'Average Concentration of Total Phosphorus (' + greekSymbol('l') +'g/L)');
data.addRows(dataArray.length);
for (var i=0; i<dataArray.length; i++){
data.setValue(i, 0, dataArray[i].date);
data.setValue(i, 1, getAverage(dataArray[i].tp1, dataArray[i].tp2));
}
var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
chart.draw(data, {width: 700, height: 480, colors:['#d4bfff'],
hAxis: {title: 'Date', titleColor:'black'}, vAxis: {title: 'Average Concentration of Total Phosphorus (' + greekSymbol('l') +'g/L)', minValue: 0.0}
});
}
window.onload = function (){
var str = "<table class='lakepartner' border='1'><tr><th><center>Date</center></th><th><center>Sample 1 (µg/L)</center></th><th><center>Sample 2 (µg/L)</center></th><th><center>Average (µg/L)</center></th></tr><tr><td>";
strArray = [];
for (var i=0; i<dataArray.length; i++){
var v1 = "";
if((typeof(dataArray[i].tp1) != "undefined")){
v1 = "" + (dataArray[i].tp1);
}
var v2 = "";
if((typeof(dataArray[i].tp2) != "undefined")){
v2 = "" + (dataArray[i].tp2);
}
avgString = "";
var avg = getAverage(dataArray[i].tp1, dataArray[i].tp2);
if(avg > 0){
avgString = "" + avg;
}
strArray.push(dataArray[i].date + "</td><td><center>" + v1 + "</td><td><center>" + v2 + "</td><td><center>" + avgString);
}
document.getElementById("data_table").innerHTML = str + strArray.join("</center></td></tr><tr><td>") + "</center></td></tr></table>";
}
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<a name="top" id="top"></a>
<div id="right_column">
<h1>${LAKENAME} (STN ${STN}, Site ID ${SITEID})</h1>
<strong>${SITEDESC}</strong>
<p>The Lake Partner Program is a province-wide, volunteer-based, water-quality monitoring program. Volunteers collect total phosphorus samples and make monthly water clarity observations on their lakes. This information will allow the early detection of changes in the nutrient status and/or the water clarity of the lake due to the impacts of shoreline development, climate change and other stresses.</p><p>Approximately 800 active volunteers monitor Secchi depth and total phosphorus at 728 locations in the lakes across Ontario.</p><p>Total phosphorus concentration are ideally used to interpret nutrient status in Ontario lakes, since phosphorus is the element that controls the growth of algae in most Ontario lakes. Increases in phosphorus will decrease water clarity by stimulating algal growth. In extreme cases, algal blooms will affect the aesthetics of the lake and/or cause taste and odour problems in the water.</p><p>Many limnologists place lakes into three broad categories with respect to nutrient status. Lakes with less that 10 ÎŒg/L TP are considered oligotrophic. These are dilute, unproductive lakes that rarely experience nuisance algal blooms. Lakes with TP between 10 and 20 ÎŒg/L are termed mesotrophic and are in the middle with respect to trophic status. These lakes show a broad range of characteristics and can be clear and unproductive at the bottom end of the scale or susceptible to moderate algal blooms at concentration near 20 ÎŒg/L. Lakes over 20 ÎŒg/L are classed as eutrophic and may exhibit persistent, nuisance algal blooms.</p><p>Note: Tea stained lakes, with high dissolved organic carbon (DOC), are called dystrophic lakes and do not share the algal/TP relationships described above. Generally there can be more TP in a dystrophic lake without the occurrence of algal blooms. The chemistry of these lakes is quite complex.</p><p><a href="JavaScript:window.print();">Print this page</a></p> <center><h3>Average Total Phosphorus (TP) Concentration (µg/L)</h3></center><center><div id="chart_div"></div><br>
<br><h3>Average Total Phosphorus (TP) Concentration (µg/L)</h3>
<div id="data_table"></div>
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<br><br>If you have some suggestions or find some errors, please send an Email to <a href='mailto:lakepartner@ontario.ca?subject=Portal Error Submission'>lakepartner@ontario.ca</a>.
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<TITLE>Concentration moyennes de phosphore total (µg/L)</TITLE>
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</style>
<style type="text/css">table.lakepartner { border-collapse: collapse; border-color: #000; }
table.lakepartner th { background-color: #666; color: #FFF; padding: 3px; }
table.lakepartner td { padding: 3px; }</style>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript" src="tp_${ID}.js"></script>
<script type="text/javascript">
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function greekSymbol(str) {return String.fromCharCode(str.charCodeAt(0) + (913 - 65));}
function getAverage(tp1, tp2){
var value = 0;
if((typeof(tp1) != "undefined") && (typeof(tp2) != "undefined")){
value = 0.5*(tp1 + tp2);
}else{
if((typeof(tp1) != "undefined")){
value = tp1;
}
if((typeof(tp2) != "undefined")){
value = tp2;
}
}
return parseFloat(value.toFixed(2));
//return value;
}
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Date');
data.addColumn('number', 'Concentration moyennes de phosphore total (' + greekSymbol('l') +'g/L)');
data.addRows(dataArray.length);
for (var i=0; i<dataArray.length; i++){
data.setValue(i, 0, dataArray[i].date);
data.setValue(i, 1, getAverage(dataArray[i].tp1, dataArray[i].tp2));
}
var chart = new google.visualization.ColumnChart(document.getElementById('chart_div'));
chart.draw(data, {width: 700, height: 480, colors:['#d4bfff'],
hAxis: {title: 'Date', titleColor:'black'}, vAxis: {title: 'Concentration moyennes de phosphore total (' + greekSymbol('l') +'g/L)', minValue: 0.0}
});
}
window.onload = function (){
var str = "<table class='lakepartner' border='1'><tr><th><center>Date</center></th><th><center>Ăchantillon 1 (µg/L)</center></th><th><center>Ăchantillon 2 (µg/L)</center></th><th><center>Moyenne (µg/L)</center></th></tr><tr><td>";
strArray = [];
for (var i=0; i<dataArray.length; i++){
var v1 = "";
if((typeof(dataArray[i].tp1) != "undefined")){
v1 = "" + (dataArray[i].tp1);
}
var v2 = "";
if((typeof(dataArray[i].tp2) != "undefined")){
v2 = "" + (dataArray[i].tp2);
}
avgString = "";
var avg = getAverage(dataArray[i].tp1, dataArray[i].tp2);
if(avg > 0){
avgString = "" + avg;
}
strArray.push(dataArray[i].date + "</td><td><center>" + v1 + "</td><td><center>" + v2 + "</td><td><center>" + avgString);
}
document.getElementById("data_table").innerHTML = str + strArray.join("</center></td></tr><tr><td>") + "</center></td></tr></table>";
}
</script>
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<h1>${LAKENAME} (STN ${STN}, N° du lieu ${SITEID})</h1>
<strong>${SITEDESC}</strong>
<p>Le Partenariat pour la protection des lacs ontariens est un programme de surveillance de la qualitĂ© de lâeau qui fait appel Ă des bĂ©nĂ©voles de toute la province. Les bĂ©nĂ©voles recueillent des Ă©chantillons dâeau dâun lac pour mesurer sa teneur en phosphore total et notent chaque mois des donnĂ©es sur la transparence de lâeau. Ces donnĂ©es permettent de noter rapidement les changements dans lâĂ©quilibre nutritif ou la transparence de lâeau du lac, quâils soient liĂ©s Ă lâamĂ©nagement des berges, au changement climatique ou Ă dâautres sources de perturbation.</p><p>Quelque 800 bĂ©nĂ©voles mesurent la transparence de lâeau avec un disque Secchi et Ă©valuent la teneur en phosphore total de lâeau des lacs de lâOntario dans 728 lieux.</p><p>Les mesures de la teneur en phosphore total servent Ă Ă©valuer lâĂ©quilibre nutritif des lacs de lâOntario, car le phosphore est la substance qui favorise la croissance des algues dans la plupart des lacs de lâOntario. Plus la teneur en phosphore est Ă©levĂ©e, plus il y a dâalgues et donc plus lâeau est trouble. Dans les cas extrĂȘmes, la prolifĂ©ration dâalgues dĂ©grade lâaspect physique du lac, altĂšre le goĂ»t de lâeau ou entraĂźne des odeurs.</p><p>Les limnologues classent gĂ©nĂ©ralement les lacs en trois catĂ©gories dâĂ©quilibre nutritif. Dâabord, les lacs oligotrophes contiennent moins de 10 ÎŒg/L de phosphore total. DiluĂ©s et improductifs, ils sont rarement envahis par les algues. Ensuite, les lacs mĂ©sotrophes contiennent entre 10 et 20 ÎŒg/L de phosphore total. SituĂ©s au milieu de lâĂ©chelle trophique, ces lacs ont des caractĂ©ristiques variĂ©es. Ils peuvent ĂȘtre transparents et improductifs ou prĂ©senter une quantitĂ© modĂ©rĂ©e dâalgues avec des concentration de prĂšs de 20 ÎŒg/L. Enfin, les lacs eutrophes contiennent plus de 20 ÎŒg/L de phosphore total et prĂ©sentent des algues en abondance.</p><p>Ă noter : Les lacs dystrophes, de teinte brune, contiennent beaucoup de carbone organique dissous (COD). Le phosphore total dans ces lacs nâaugmente pas la quantitĂ© dâalgues comme dans les lacs dĂ©crits ci-dessus. GĂ©nĂ©ralement, ces lacs peuvent avoir une teneur Ă©levĂ©e en phosphore total sans prolifĂ©ration dâalgues. Leur composition chimique est assez complexe.
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<p><a href="JavaScript:window.print();">Imprimer cette page</a></p> <center><h3>Concentration moyennes de phosphore total (µg/L)</h3></center><center><div id="chart_div"></div><br> <br><h3>Concentration moyennes de phosphore total (µg/L)</h3>
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<br><br>Si vous avez des suggestions ou trouvez des erreurs, envoyez un courriel Ă <a href='mailto:lakepartner@ontario.ca?subject=Erreur de Portail'>lakepartner@ontario.ca</a>.
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