/** * Return the unique values from this array * http://www.martienus.com/code/javascript-remove-duplicates-from-array.html * @param a * @return */ function unique(a) { var r = new Array(); o:for(var i = 0, n = a.length; i < n; i++) { for(var x = 0, y = r.length; x < y; x++) { if(r[x]==a[i]) continue o; } r[r.length] = a[i]; } return r; } /** * Extract a parameter from the query string. * * From http://ilovethecode.com/Javascript/Javascript-Tutorials-How_To-Easy/Get_Query_String_Using_Javascript.shtml * @param {String} ji The name of the parameter to be extracted * @return The value of the named parameter, or null if it doesn't exist. */ function querySt(ji) { hu = window.location.search.substring(1); gy = hu.split("&"); for (i = 0; i < gy.length; i++) { ft = gy[i].split("="); if (ft[0] == ji) { return ft[1]; } } return null; } /** * Format the object as indented JSON. * * @param object The object to return * @param depth The depth of the indentation * @return A string representation of the object. */ function inspect(object, depth) { if (!depth) { depth = 1; } if (object == null) { return "null"; } var temp = "{\n"; for (x in object) { if (typeof object[x] == "object") { temp += pad(x + ": " + inspect(object[x], depth + 1) + "\n", depth * 4, " "); } else { temp += pad(x + ": " + object[x] + "\n", depth * 4, " "); } } return temp + pad("}", (depth - 1) * 4, " "); } function pad(str, toLen, padwith) { toRet = String(str); while (toRet.length < toLen) { toRet = padwith + toRet; } return toRet; } /** * Get the keys of an array * @param o The array to search * @return An array containing the keys. */ function keys(o) { var toRet = new Array(); for (var x in o) { toRet.push(x); } return toRet; } function values_for_keys(a, k) { var ret = new Array(); for (var k_ in k) { ret.push(a[k[k_]]); } return ret; } /** * Convert a date object into 12 hour time. * @param date The date object * @param isutc Is this date in UTC * @return A string representation of the date in 12 hour format */ function get12HTime(date, isutc) { hours = date.getHours(); if (isutc) { hours = date.getUTCHours(); } M = " AM"; if (hours >= 12) { if (hours > 12) { hours = hours - 12; } M = " PM"; } hours = pad(hours, 2, 0); toRet = hours + ":" + pad(date.getMinutes(), 2, 0) + ":" + pad(date.getSeconds(), 2, 0) + M; if (isutc) { toRet = hours + ":" + pad(date.getUTCMinutes(), 2, 0) + ":" + pad(date.getUTCSeconds(), 2, 0) + M; } return toRet; } /** * Returns a date formatted as dd/mm/yyyy * @param date the Date object * @param isutc display the date at UTC * @return String date representation. */ function getTDate(date, isutc, include_year) { var _date = date; if (include_year == null) { include_year = true; } if(typeof _date == typeof 1) { _date = new Date(); _date.setTime(date); } if (isutc) { toRet = pad(_date.getUTCDate(), 2, "0") + "/" + pad(_date.getUTCMonth() + 1, 2, "0"); if (include_year) toRet += "/" + _date.getUTCFullYear(); } else { toRet = pad(_date.getDate(), 2, "0") + "/" + pad(_date.getMonth() + 1, 2, "0"); if (include_year) toRet += "/" + _date.getFullYear(); } return toRet; } function curryTDate(isUTC, include_year){return function(date){return getTDate(date, isUTC, include_year);}} /** * Convert a time string HH:MM:SS X, to seconds since midnight * @param t1 time1 * @return integer seconds from midnight */ function timeToSeconds(time) { var p = time.split(' '); var t = p[0].split(':'); var offset = 0; if (p[1] == 'PM') { offset = 12 * 60 * 60; } return offset + parseInt(t[0] * 60 * 60 + t[1] * 60 + t[2]); } function mnthcmp(a, b) { return mnths_rev[a] - mnths_rev[b]; } function datecmp(a, b) { a = a.substring(6, 10) + a.substring(3, 5) + a.substring(0, 2); b = b.substring(6, 10) + b.substring(3, 5) + b.substring(0, 2); return a.localeCompare(b); } /** * Function for reversing the order of a date sort. * @param a * @param b * @return */ function rev_datecmp(a, b) { return datecmp(b, a); } function caculateTimeoneOffset(tz) { jQuery.logf("TimeZone: %s", tz); if (tz.substring(0,3) == 'GMT') { tz = tz.substring(3); } var parts = tz.split(":"); var minutes = parseInt(parts[1], 10); var hours = parts[0].substring(1); var sign = parts[0].substring(0, 1) == "+" ? 1 : -1; return sign * ((hours * 60 * 60 * 1000) + (minutes * 60 * 1000)); } /** * * @param values * @param uniqueTimes * @param processed * @param timezone * @param decimals * @param times_of_interest defines catchment times (+- 30 minutes) * @return */ function processFeed(values, uniqueTimes, processed, timezone, decimals, times_of_interest) { if (decimals == null) decimals = 0; // jQuery.logf("TimeZone: %s", timezone); var offset = caculateTimeoneOffset(timezone); // jQuery.logf("TimeZone Offset: %s", offset); var useUTC = true; // If we are defining uniqueTimes then initialise them if (times_of_interest != null) { for (t_ in times_of_interest) { uniqueTimes.push(times_of_interest[t_]); } } $.each(values, function() { if ("time" in this) { //This ensures that all proceeding caculation are carried out fot the timezone //that the camera is in, not the timezone the browser is in. // jQuery.logf("Input: %s", this.time); var p_time = new Date(this.time); p_time.setTime(p_time.getTime() + offset); d = getTDate(p_time, useUTC); t = get12HTime(p_time, useUTC); // Time in seconds t_s = timeToSeconds(t) var val = parseFloat(this.value, 10); val = val.toFixed(decimals); // Initialise the date bucket if (processed[d] == null) { processed[d] = new Array(); } if (times_of_interest == null) { var found = false; for (t_ in uniqueTimes) { if (t == uniqueTimes[t_]) { found = true; break; } } if (!found) { uniqueTimes.push(t); // jQuery.logf("New Unique Time: %s",t); } // Add this value processed[d][t] = val; } else { for (t_ in uniqueTimes) { u_t = uniqueTimes[t_] if (Math.abs(timeToSeconds(u_t) - t_s) < 30 * 60) { if (processed[d][u_t] == null) { processed[d][u_t] = new Array(); } processed[d][u_t].push(parseFloat(val)); } } } } }); // if we're using time_of_interest then we need to sort out the averages. if (times_of_interest != null) { for (d in processed) { for (t in processed[d]) { s = sum(processed[d][t]); l = processed[d][t].length if (l == 0) { processed[d][t] = 0; } else { processed[d][t] = s / l; } } } } } function sortUniqueTimes(uniqueTimes) { uniqueTimes.sort(function(a, b) { //Radix needs to be explicit otherwise leading zeroes cause the string to be parsed as octal. var a_h = parseInt(a.substring(0, 2), 10); var b_h = parseInt(b.substring(0, 2), 10); if (a.substring(a.search(' ') + 1) == 'PM' && a_h != 12) { a_h += 12; } if (b.substring(b.search(' ') + 1) == 'PM' && b_h != 12) { b_h += 12; } return a_h - b_h; }); } function getColours(data) { var d_mean = mean(data); var d_std = std_dev(data); var toRet = new Array(); var out_col = "b12e2e"; var in_col = "ffcc33"; jQuery.logf("STD: " + d_std); for (i in data) { jQuery.logf(Math.abs(data[i] - d_mean) + " : " + (Math.abs(data[i] - d_mean) > (d_std))); if (Math.abs(data[i] - d_mean) > (d_std)) { toRet.push(out_col); } else { toRet.push(in_col); } } return toRet; } /** * Produce the graph URL from the components supplied * @param x_label * @param y_label * @param title * @param data * @param data_labels * @param data_colours * @param y_max * @param column_size * @param point_labels * @return */ function makeBarGraphURL(x_label, y_label, title, data, data_labels, data_colours, y_max, column_size, point_labels, dim, y_label_pos, additional) { if (dim == null) dim = '400x200'; return 'http://chart.apis.google.com/chart?cht=bvs&chs=' + dim + '&chxt=x,x,y' + '&chxl=1:|' + x_label + '|2:|' + y_label + '|&chxp=1,0,50,100' + '|2,' + (y_label_pos == null ? "0,50,100":y_label_pos) + '&chbh=' + column_size + '&chd=t:' + data.join(",") + (title == null ? "" :'&chtt=' + title) + '&chl=' + data_labels.join("|") + (point_labels ? '&chm=' + point_labels : '') + '&chds=0,' + y_max + (data_colours == null ? "" : '&chco=' + data_colours.join("|")) + (additional == null ? "" : additional); } function makeLineGraphURL(x_label, y_label, title, data, data_labels, data_colours, y_max, point_labels, x_min, x_max) { return 'http://chart.apis.google.com/chart?cht=lxy&chs=400x200&chxt=x,x,y' + '&chxl=1:|' + x_label + '|2:|0|' + y_label + '|' + y_max + '|&chxp=1,50|2,0,50,100' + '&chd=t:' + data + '&chtt=' + title + '&chl=' + data_labels + (point_labels ? '&chm=' + point_labels : '') + '&chds=' + x_min + ',' + x_max + ',0,' + y_max + ',' + x_min + ',' + x_max + ',0,' + y_max + ',' + x_min + ',' + x_max + ',0,' + y_max + (data_colours == null ? "" : '&chco=' + data_colours); } function makeLineSeriesGraphURL(x_label, y_label, title, data, data_labels, data_colours, y_max, point_labels, x_min, x_max, dim, y_label_pos) { if (dim == null) dim = '400x200'; return 'http://chart.apis.google.com/chart?cht=lc&chs=' + dim + '&chxt=x,x,y' + '&chxl=1:|' + x_label + '|2:|' + y_label + '|&chxp=1,0,50,100' + '|2,' + (y_label_pos == null ? "0,50,100":y_label_pos) + '&chd=t:' + data.join(",") + '&chtt=' + title + '&chl=' + data_labels.join("|") + (point_labels ? '&chm=' + point_labels : '') + '&chds=0,' + y_max + (data_colours == null ? "" : '&chco=' + data_colours.join("|")); } function getWeek(date) { //From: //http://javascript.about.com/library/blweekyear.htm var onejan = new Date(date.getFullYear(), 0, 1); return Math.ceil((((date - onejan) / 86400000) + onejan.getDay() + 1) / 7); } /** * Calculate the average of the object indexed array. * @param d * @return */ function calculateAverage(d) { // Calculate an average for each day. count = 0; day_total = 0; for (t_ in d) { count++; day_total += d[t_]; } // If there was no data then set to 0 to avoid NaN if (count == 0) { day_total = 0; } else { day_total = day_total / count; } return day_total; } function cleanLabels(graphLabel, label_count) { var modu = Math.floor(graphLabel.length / label_count); for (var i = 0; i < graphLabel.length; i++) { if ((i % modu) != 0) { graphLabel[graphLabel.length - (i+1)] = ""; } } } function makeYearlyData(processed, uniqueTimes, place) { var yearlydata = new Array(); var yearlylabel = new Array(); var graphData = new Array(); var graphLabel = new Array(); var mnths = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]; var count = 0; var parts, year, week, l_week, t_date, d_week; var order = keys(processed); order.sort(rev_datecmp); for (x in order) { parts = order[x].split("/"); year = parts[parts.length - 1]; if (!yearlydata[year]) { yearlydata[year] = new Array(); yearlylabel[year] = new Array(); } week = getWeek(new Date(parseInt(parts[2], 10), parseInt(parts[1] - 1, 10), parseInt(parts[0], 10))); if (!yearlydata[year][week]) { yearlydata[year][week] = new Array(); yearlylabel[year][week] = new Array(); } yearlydata[year][week].push(processed[order[x]]); yearlylabel[year][week].push(mnths[parseInt(parts[1] - 1, 10)]); } //merge the fragments of a week that exists at the end and beginning of a year; order = keys(yearlydata); order.sort(datecmp); if (order.length > 1) { for (var i = 1; i < order.length; i++) { parts = order[i].split("/"); t_date = new Date(parseInt(parts[2], 10), 0, 1); //Only if the first of jan is not day 0. if (yearlydata[order[i - 1]].length >= 53 && t_date.getDay() != 0) { // yearlydata[order[i-1]][yearlydata[order[i-1]].length-1] = yearlydata[order[i-1]][yearlydata[order[i-1]].length-1].concat(yearlydata[order[i]][1]); // yearlydata[order[i]].shift(); } } } order.sort(datecmp); for (var x in order) { year = order[x]; //starts at one because the the first week from getWeek in 1 not 0. for (i = 1; i < yearlydata[year].length; i++) { // The data for the ith week of the year d_week = yearlydata[year][i]; // The labels for this data. l_week = yearlylabel[year][i]; graphData[count] = 0; for (var dp in d_week) { // Get the sum of the daily averages graphData[count] += calculateAverage(d_week[dp]); } // Now take the weekly averages from this if (d_week != null && d_week.length != 0) { graphData[count] = graphData[count] / d_week.length; } graphLabel[count] = a_max(l_week, mnthcmp); count++; } } cleanLabels(graphLabel, 11); graphData = graphData.slice(graphData.length - 52); graphLabel = graphLabel.slice(graphLabel.length - 52); return makeBarGraphURL("Months", "Count", place + "+Yearly", graphData, graphLabel, null, a_max(graphData), "a", "N*f0*,000000,0,-1,11"); } function makeDailyBar(processed, uniqueTimes, place) { var intra_daily_data = new Array(); var intra_daily_label = new Array(); var order = keys(processed); order.sort(rev_datecmp); var uniqueTimesRev = uniqueTimes.slice().reverse(); var max = 0; var d; for (var i = 0; i < 2; i++) { d = order[i]; $.each(uniqueTimesRev, function(i, t) { if (processed[d][t] == null) { today_val = 0; } else { today_val = processed[d][t]; } if (today_val > max) { max = today_val } intra_daily_data.push(today_val); intra_daily_label.push(t.substring(0, t.search(':')) + t.substring(t.search(' '))); }); } var x_label; if (order.length > 0) { x_label = order[1] + " Day " + order[0]; } else { x_label = " Day " + order[0]; } return makeBarGraphURL(x_label, "Count", place + "+48+Hours", intra_daily_data.reverse(), intra_daily_label.reverse(), getColours(intra_daily_data), max, "20,20,10", "N*f0*,000000,0,-1,11"); } /** * Construct a dataset suitable for plotting on a daily bar graph, and return a graph url. * * @param processed the data set * @param place the location object * @param days number of days to include in the dataset * @param y_label_count * @param chbh * @param chm * @return */ function makeDailyData(processed, place, days, y_label_count, chbh, chm) { var daily_data = new Array(); var daily_label = new Array(); var order = keys(processed); order.sort(rev_datecmp); var d; var max = 0; var day_total; if (days > order.length) { days = order.length; } if (y_label_count > days) { y_label_count = days; } if (!chbh) { chbh = "a"; } for (var i = 0; i < days; i++) { d = order[i]; day_total = calculateAverage(processed[d]); // Record the max value for scaling if (day_total > max) { max = day_total; } daily_data.push(day_total); daily_label.push(d.substring(0, 5)); } // var modu = Math.floor(daily_label.length / y_label_count); // for (var i = 0; i < daily_label.length; i++) // { // if ((i % modu) != 0) // { // daily_label[i] = ""; // } // } cleanLabels(daily_label, y_label_count) return makeBarGraphURL("Day", "Count", place + "+" + days + "+Days", daily_data.reverse(), daily_label.reverse(), getColours(daily_data), max, chbh, chm); } function makeWeekleyBar(processed, uniqueTimes, place) { return makeDailyData(processed, place, 7, 7, "20,20,10", "N*f0*,000000,0,-1,11"); } function makeMonthlyBar(processed, uniqueTimes, place) { return makeDailyData(processed, place, 28, 5, "10,2,10", "N*f0*,000000,0,-1,11"); } function makeYearlyBar(processed, uniqueTimes, place) { return makeYearlyData(processed, uniqueTimes, place); } var bar_grapher = {"daily":makeDailyBar, "weekly":makeWeekleyBar, "monthly":makeMonthlyBar,"yearly":makeYearlyBar}; /** * The entry point method for constructing a graph of the data stream. * * @param period The type of graph which is being produced * @param data The data structure for the data set * @param entity The location entity * @param times_of_interest an array containing the 12 hour times which we are interested in. * @return */ function constructGoogleGraph(period, data, entity, times_of_interest) { if (!period in bar_grapher) { return "blank.html"; } var values = data['points']; jQuery.logf("Entity Name: %s", entity.name); var place = entity.name; //The timezone of the data/camera. var timezone = entity.timezone; //var timezone = "+10:00"; // Organise the data var processed = new Array(); var uniqueTimes = new Array(); processFeed(values, uniqueTimes, processed, timezone, 0, times_of_interest); // Sort the times. sortUniqueTimes(uniqueTimes); return bar_grapher[period](processed, uniqueTimes, place); } function align_boundry_to_end_of_week(now) { var d = new Date(); d.setTime(now); d.setUTCHours(0, 0, 0, 0); return d.getTime() + ((7 - d.getDay()) * TimeSize.day); } function align_boundry_to_end_of_day(now) { var d = new Date(); d.setTime(now); d.setUTCHours(24, 0, 0, 0); return d.getTime(); } function createHashFunction(now, bucketsize_ms) { return function(to_hash) { to_hash.__hash_code = Math.floor((to_hash._time - now) / bucketsize_ms); return to_hash.__hash_code; } } function createRangeFilter(min, max) { return function (to_filter) { return !(to_filter <= max && to_filter >= min); } } function createRangeReMapper(func, min) { return function (to_hash) { return func(to_hash) - min; } } function getMonthLabel(val) { var d = new Date(); d.setTime(val); return mnths[d.getUTCMonth()]; } var line_grapher = {"now":function(period, noaa, cam, place, timezone) { var x_tmp = new Array(); var y_tmp = new Array(); var graph_label = new Array(); var graph_data = new Array(); var cmp = date_sort_closure(timezone); var cam_data = cam.points; cam_data.sort(cmp); noaa.points.sort(cmp); var now = cam_data[cam_data.length - 1]._time; var max = 0; var tl_min = -6; var tl_max = 40; cam_data = processWaveData(cam_data, now, tl_min, tl_max, timezone); jQuery.logf("Cam Data: %s", inspect(cam_data)); var noaa_data = processWaveData(noaa.points, now, tl_min, tl_max, timezone); for (var x in cam_data) { cam_data[x].value = cam_data[x].value.toFixed(1); x_tmp.push(x); y_tmp.push(cam_data[x].value) if (cam_data[x].value > max) { max = cam_data[x].value; } } graph_data.push(x_tmp.join(",")); graph_data.push(y_tmp.join(",")); x_tmp = new Array(); y_tmp = new Array(); for (var x in noaa_data) { noaa_data[x].value = noaa_data[x].value.toFixed(1); x_tmp.push(x); y_tmp.push(noaa_data[x].value) if (noaa_data[x].value > max) { max = noaa_data[x].value; } } graph_data.push(x_tmp.join(",")); graph_data.push(y_tmp.join(",")); graph_data.push([0 - tl_min, 0 - tl_min].join(",")); graph_data.push("0," + max); for (var i = 0; i < (tl_max - tl_min); i += 6) { graph_label[i] = i + tl_min; } graph_label[0 - tl_min] = "Now" jQuery.logf("Cam Data: %s", graph_data.join("|")); return makeLineGraphURL("Hours", "Height (m)", place + "+Wave Height Information", graph_data.join("|"), graph_label.join("|"), [Colours.cam, Colours.noaa, Colours.now].join(","), max, null, 0, 46); }, "week":function(period, noaa, cam, place, timezone) { var x_tmp = new Array(); var y_tmp = new Array(); var graph_label = new Array(); var graph_data = new Array(); var cmp = date_sort_closure(timezone); var cam_data = cam.points; cam_data.sort(cmp); var now = cam_data[cam_data.length - 1]._time; var max = 0; var tl_min = -7 * 24; var tl_max = 0; cam_data = processWaveData(cam_data, now, tl_min, tl_max, timezone); var last_date = null; for (var x in cam_data) { var this_date = getTDate(new Date(cam_data[x]._time), false, false); if (last_date == null || last_date != this_date) { graph_label[x] = this_date; } else { graph_label[x] = ''; } last_date = this_date; cam_data[x].value = cam_data[x].value.toFixed(1); x_tmp.push(x); y_tmp.push(cam_data[x].value) if (cam_data[x].value > max) { max = cam_data[x].value; } } jQuery.logf("Max value: %s", max); graph_data.push(x_tmp.join(",")); graph_data.push(y_tmp.join(",")); jQuery.logf("Cam Data: %s", graph_data.join("|")); return makeLineGraphURL("Days", "Height", place + "+Wave Height Information", graph_data.join("|"), graph_label.join("|"), [Colours.cam, Colours.noaa, Colours.now].join(","), max, null, 0, 168); }, "month":function(period, noaa, cam, place, timezone) { cam.points.sort(date_sort_closure(timezone)); var now = new Date(); now.setTime(cam.points[cam.points.length - 1]._time); var cam_data = hash( cam.points, /*createRangeReMapper is needed because if array indicies are negitive, they are converted to a string and becomes the property key. Hence length is not incremented.*/ createRangeReMapper(createHashFunction(align_boundry_to_end_of_day(now.getTime()), TimeSize.day), -30), createRangeFilter(0, 29), false ); var graph_data = cam_data.map(curryAgg(mean, function(a) { return a.value; })); var graph_label = cam_data.map(curryAgg(function(data, cmp) { return a_max(data, cmp)._time; }, function(a, b) { return a._time - b._time })); graph_label = graph_label.map(curryTDate(true, false)); cleanLabels(graph_label, 7); // These are raw arrays, not associative arrays like graph_data graph_keys = keys(graph_data); graph_values = values_for_keys(graph_data, graph_keys); return makeLineGraphURL("Days", "Height", place + "+Monthly Wave Height Information", [graph_keys.join(","), graph_values.join(",")].join("|"), graph_label.join("|"), [Colours.cam, Colours.noaa, Colours.now].join(","), Math.ceil(a_max(graph_values)), null, 0, 29); },"year":function(period, noaa, cam, place, timezone) { cam.points.sort(date_sort_closure(timezone)); var now = new Date(); now.setTime(cam.points[cam.points.length - 1]._time); var cam_data = hash( cam.points, /*createRangeReMapper is needed because if array indicies are negitive, they are converted to a string and becomes the property key. Hence length is not incremented.*/ createRangeReMapper(createHashFunction(align_boundry_to_end_of_week(now.getTime()), TimeSize.week), -52), createRangeFilter(0, 51), false ); var graph_data = cam_data.map(curryAgg(mean, function(a) { return a.value; })); var graph_label = cam_data.map(curryAgg(function(data, cmp) { return a_max(data, cmp)._time; }, function(a, b) { return a._time - b._time })); graph_label = graph_label.map(getMonthLabel); cleanLabels(graph_label, 11); // These are raw arrays, not associative arrays like graph_data graph_keys = keys(graph_data); graph_values = values_for_keys(graph_data, graph_keys); return makeLineGraphURL("Months", "Height", place + "+ Yearly Wave Height Information", [graph_keys.join(","), graph_values.join(",")].join("|"), graph_label.join("|"), [Colours.cam, Colours.noaa, Colours.now].join(","), Math.ceil(a_max(graph_values)), null, 0, 51); }}; function hourDiff(d1, d2) { var hr = 60 * 60 * 1000; return Math.floor((d1 - d2) / hr); } function processWaveData(data, now, min, max, timezone) { var toRet = new Array(); var diff; for(x in data) { diff = hourDiff(data[x]._time, now) if(diff <= max && diff >= min) { data[x].label= diff; toRet[diff-min] = data[x]; } } return toRet; jQuery.logf("II BucketSize: %s", TimeSize.hour); // return hash(data, createRangeReMapper(createHashFunction(now, TimeSize.hour), min), createRangeFilter(min, max), true); } function date_sort_closure(timezone) { jQuery.logf("DTimeZone: %s", timezone); var offset = caculateTimeoneOffset(timezone); function setTime(a) { var e_time; if (!("_time" in a)) { e_time = new Date(a.time); e_time.setTime(e_time.getTime() + offset); a["_time"] = e_time.getTime(); } } function sort(a, b) { setTime(a); setTime(b); return a._time - b._time; } return sort; } function constructWaveHeightGraph(period, noaa, cam, entity) { var place = entity.name; jQuery.logf("==================================================================================================="); //The timezone of the data/camera. var timezone = entity.timezone; //var timezone = "+10:00"; return line_grapher[period](period, noaa, cam, place, timezone); } function translateTimezone(d, timezone) { var offset = caculateTimeoneOffset(timezone); var p_time = new Date(d); p_time.setTime(p_time.getTime() + offset); return p_time; } function toUTCString(d, timezone) { var offset = caculateTimeoneOffset(timezone); var p_time = new Date(d); p_time.setTime(p_time.getTime() - offset); return p_time.toString("ddd, dd MMM yyyy HH:mm:ss UTC"); } /** * Convert a metre value to (surfer) feet. * @param val * @return */ function mToFeet(val, loc_id) { switch (loc_id) { case '3': // Snapper if (val < 1) { val = val / 2.4; } else if (val < 1.4) { val = val / 2.2; } else if (val < 1.5) { val = val / 2; } else if (val < 1.7) { val = val / 1.8; } else if (val < 2) { val = val / 1.7; } else if (val < 2.2) { val = val / 1.6; } else if (val < 2.5) { val = val / 1.5; } else { val = val / 1.5; } break; case '5': // Bondi if (val < 1) { val = val / 2; } else if (val < 1.5) { val = val / 1.8; } else if (val < 2) { val = val / 1.6; } else if (val < 2.5) { val = val / 1.5; } else { val = val / 1.5; } break default: if (val < 1) { val = val / 2; } else if (val < 1.5) { val = val / 1.8; } else if (val < 2) { val = val / 1.6; } else if (val < 2.5) { val = val / 1.5; } else { val = val / 1.5; } break } val = val * 3.3; val = val.toFixed(1); return val; } function getWaveHeightMap(loc_id) { switch (loc_id) { case 1: return 'maps/1200_WH.jpg'; case 2: return 'maps/1700_WH.jpg'; case 3: return 'maps/1950_WH.jpg'; case 4: return 'maps/1500_WH.jpg'; case 5: return 'maps/3800_WH.jpg'; case 5155: return 'maps/1900_WH.jpg'; case 516329: return 'maps/10220_WH.jpg'; case 561391: return 'maps/13100_WH.jpg'; case 588287: return 'maps/15110_WH.jpg'; default: return 'maps/NO_MAP.jpg'; } } function getSiteName(loc_id) { switch (loc_id) { case 1: return 'Artificial Reef'; case 2: return 'Kirra'; case 3: return 'Snapper Rocks'; case 4: return 'Burleigh Heads'; case 5: return 'Bondi'; case 5155: return 'Rainbow Bay'; case 516329: return 'Sandys'; } }