Last active
November 27, 2023 06:39
-
-
Save zanarmstrong/ca0adb7e426c12c06a95 to your computer and use it in GitHub Desktop.
d3 time formatting example
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| body { | |
| margin: 20px 0px 0px 50px; | |
| } | |
| .formattext { | |
| text-align: right; | |
| } | |
| .formatresult { | |
| text-align: left; | |
| padding-left: 40px; | |
| } | |
| .highlightedText { | |
| font-weight: bold | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // define variables | |
| var formatlist = ["%Y-%m-%d", "%m/%d/%Y", "%H:%M","%H:%M %p", "%B %d", "%d %b", "%d-%b-%y", "%S s", "%M m", "%H h", "%a", "%A", "%d d", "%b", "%m/%Y", | |
| "%b %Y", "%B", "%c", "%d", "%e", "%H", "%I", "%j", | |
| "%m", "%M", "%L", "%p", "%S", "%U", "%w", "%W", "%x", "%X", "%y", "%Z" | |
| ]; | |
| var userTime = document.getElementById("userTime"); | |
| var colorLow = 'blue' | |
| var colorHigh = 'red' | |
| // add listener to call formatter function when user changes the number | |
| userTime.addEventListener("change", | |
| function(e) { | |
| myFormats.changeNumber(userTime.value); | |
| }, | |
| false | |
| ); | |
| // need way to update list | |
| formatSpecifier.addEventListener("change", | |
| function(e) { | |
| myFormats.addToList(formatSpecifier.value); | |
| }, | |
| false | |
| ); | |
| // create a little color scale function to make the output look pretty | |
| function setColorScale(max) { | |
| return d3.scale.linear() | |
| .domain([0, max]) | |
| .interpolate(d3.interpolateRgb) | |
| .range([colorLow, colorHigh]) | |
| } | |
| // construct code/text pairs from list of formats I could use | |
| var constructFormatObject = function(mylist) { | |
| var types = []; | |
| mylist.forEach(function(d) { | |
| types.push({ | |
| code: d3.time.format(d), | |
| text: 'd3.time.format("' + d + '")' | |
| }) | |
| }) | |
| return types | |
| } | |
| //Jan. 28, 1986, 11:38:00 a.m. EST | |
| //Mission Duration: 1 minute, 13 seconds | |
| var myFormats = new ShowFormats( | |
| formatlist, | |
| new Date(1986, 0, 28, 11, 39, 13)); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Formatting Example</title> | |
| <link rel="stylesheet" href="d3formatting.css"> | |
| </head> | |
| <body> | |
| <script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| This little tool helps you try out d3.time.format specifiers.<br> | |
| Documentation for time format specifiers is <a href="https://github.com/mbostock/d3/wiki/Time-Formatting">here</a>. | |
| <br><br> | |
| Enter a date (year, month, day, hour, minutes, seconds):<br> | |
| <input id="userTime" type="string"><br><br> | |
| Add your own format specifier (ex: %a):<br> | |
| <input id="formatSpecifier" type="string"><br><br> | |
| Date formatted below: new Date(<span id="rawDate" class="highlightedText"></span>), or <span id="dateEntered" class="highlightedText"></span><br> | |
| <table style="padding-top: 20px;"><thead> | |
| <tr> | |
| <th class="formattext">format specifier</th> | |
| <th class="formatresult">resulting formatted number</th> | |
| </tr> | |
| </thead> | |
| <tbody> | |
| </tbody> | |
| </table> | |
| <script src="showFormatsConstructor.js"></script> | |
| <script src="formatting.js"></script> | |
| </body> | |
| </html> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // set up showformats constructor | |
| ShowFormats = function(formatList, number) { | |
| // list of format specifiers to show | |
| this.formatList = formatList; | |
| this.formatObject = constructFormatObject(formatList); | |
| this.dataset = Array.apply(0, | |
| Array(this.formatObject.length)).map(function(x, y) { | |
| return y; | |
| });; | |
| // number to format | |
| this.number = number; | |
| this.colorScale = setColorScale(this.dataset.length) | |
| this.updateFormats() | |
| } | |
| ShowFormats.prototype.changeNumber = function(number) { | |
| var format = d3.time.format("%Y,%m,%d,%H,%M,%S"); | |
| this.number = format.parse(number); | |
| this.updateFormats(); | |
| } | |
| ShowFormats.prototype.addToList = function(specifier) { | |
| this.formatList.unshift(specifier) | |
| this.formatObject = constructFormatObject(this.formatList); | |
| // update dataset array w/ new length | |
| this.dataset = Array.apply(0, | |
| Array(this.formatObject.length)).map(function(x, y) { | |
| return y; | |
| });; | |
| this.updateFormats(); | |
| } | |
| ShowFormats.prototype.tdtextStyling = function(selection) { | |
| selection.text(function(d) { | |
| return self.formatObject[d].text; | |
| }) | |
| .style("color", function(d) { | |
| return self.colorScale(d) | |
| }) | |
| .attr("class", "formattext"); | |
| } | |
| ShowFormats.prototype.tdcodeStyling = function(selection) { | |
| selection.text(function(d) { | |
| return self.formatObject[d].code(self.number); | |
| }) | |
| .style("color", function(d) { | |
| return self.colorScale(d) | |
| }) | |
| .attr("class", "formatresult"); | |
| } | |
| ShowFormats.prototype.updateFormats = function() { | |
| self = this; | |
| document.getElementById('dateEntered').innerHTML = this.number; | |
| document.getElementById('rawDate').innerHTML = this.number.getFullYear() + | |
| ',' + this.number.getMonth() + | |
| ',' + this.number.getDay() + | |
| ',' + this.number.getHours() + | |
| ',' + this.number.getMinutes() + | |
| ',' + this.number.getSeconds(); | |
| // bind with current dataset | |
| this.selection = d3.selectAll("tbody").selectAll("tr") | |
| .data(self.dataset); | |
| // enter elements | |
| var k = this.selection.enter().append("tr") | |
| k.append("td") | |
| .call(self.tdtextStyling); | |
| k.append("td") | |
| .call(self.tdcodeStyling); | |
| // update elements | |
| this.selection | |
| .selectAll("td") | |
| .text(function(d, i) { | |
| if (i == 0) { | |
| return self.formatObject[d].text; | |
| } | |
| if (i == 1) { | |
| return self.formatObject[d].code(self.number); | |
| } | |
| }) | |
| .style("color", function(d) { | |
| return self.colorScale(d) | |
| }) | |
| .attr("class", function(d, i) { | |
| if (i == 0) { | |
| return "formattext" | |
| } else { | |
| return "formatresult" | |
| } | |
| }) | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Thanks a lot!