I'm using this link to learn D3.Js
I want to draw circles, but I want a circle for every three months
I tried to create a new data sub of the original data, but this didn't work
https://d3-graph-gallery.com/graph/area_lineDot.html
temp =[]
for (i=0; i< data.length; i=i+3) {
temp.push(data[i]);
}
I need to modify this code
svg.selectAll("myCircles")
.data(data)
.enter()
.append("circle")
.attr("fill", "red")
.attr("stroke", "none")
.attr("cx", function(d) { return x(d.date) })
.attr("cy", function(d) { return y(d.value) })
.attr("r", 3)
Try this:
svg.selectAll("myCircles")
.data(temp) // <---------- Use 'temp' instead of 'data'
.enter()
.append("circle")
.attr("fill", "red")
.attr("stroke", "none")
.attr("cx", function(d) { return x(d.date) })
.attr("cy", function(d) { return y(d.value) })
.attr("r", 3)
I got this working now the issue was the way I was reading the d.date and d.value the data has string need to be change to int
thank you Simon
Related
I have followed an example from here https://bl.ocks.org/d3noob/4db972df5d7efc7d611255d1cc6f3c4f to create a similar graph. However, I have one additional column of data that I need to use to create circles that match the color of the line where the radius will be some scaled value of that column entry. So, col 3 has values like 873, 15, 1000, 1563, etc. I have tried to do something like
svg.selectAll('circle').data(data)
.enter().append("circle")
.attr("cx", function(d) { return x(d.date) })
.attr("cy", function(d) { return y(d.close) })
.attr("r", '5')
.attr("fill", "red");
right below the point we add the path (right after adding the value line path in the link), however, obviously this only enters circles for one line. I have to add them for both.
You actually need two circles' selections, one for open and another for close:
svg.selectAll(null).data(data)
.enter().append("circle")
.attr("cx", function(d) { return x(d.date) })
.attr("cy", function(d) { return y(d.close) })
.attr("r", '5')
.attr("fill", "steelblue");
svg.selectAll(null).data(data)
.enter().append("circle")
.attr("cx", function(d) { return x(d.date) })
.attr("cy", function(d) { return y(d.open) })
.attr("r", '5')
.attr("fill", "red");
Here is the resulting code: https://bl.ocks.org/GerardoFurtado/4179c63daf38d85a266fb11f8e8e4c17/3786e4a0594e45e6e9a41df84bae4c6a43a86c6f
I am working with a d3 scatterplot. I connect to my database and initially I begin with lets say 3 dots on the graph. Each dot represents a paper and the x axis is the year and the y axis is how many citations it has. Now when I click on a dot, papers that that paper cites appear on the graph. I have managed all of the above so far but my issue now is that although when I click on dot the relevant papers appear on the graph, when I click on THOSE dots nothing happens. So I havent managed to bind my Json data to the new dots. Here is the relevant code:
// initial connection to display papers
d3.json("connection4.php", function(error,dataJson) {
dataJson.forEach(function(d) {
d.YEAR = +d.YEAR;
d.counter = +d.counter;
console.log(d);
})
//baseData is the original data that I dont want to be replaced
baseData = dataJson;
// draw dots
var g = svg.selectAll(".dot")
.data(baseData)
.enter()
.append("circle")
.attr("class", "dot")
.attr("r", 3.5)
.attr("cx", function(d) {return x(YearFn(d))})
.attr("cy", function(d) {return y(Num_citationsFn(d))})
.style("fill","blue")
.on("click", function(d, i) {
d3.json("connection2.php?paperID="+d.ID, function(error, dataJson) {
console.log(dataJson);
dataJson.forEach(function(d) {
d.YEAR = +d.YEAR;
d.counter = +d.counter;
console.log(d);
baseData.push(d);
})
var g = svg.selectAll(".dot")
.data(baseData)
.enter()
.append("circle")
.attr("class", "dot")
.attr("r", 3.5)
.attr("cx", function(d) {return x(YearFn(d))})
.attr("cy", function(d) {return y(Num_citationsFn(d))})
.style("fill", "red")
})
My queries in the php file are fine as I can see they are returning the correct data, so I think my main issue is binding my Json data from my second connection to the new dots. I wonder can anyone shed some light on how I need to go about this. I am new to d3 so any feedback is appreciated! thanks in advance
I think the problem is very simply that you do not bind the "click" event to your newly created nodes.
Replace the lines
// draw dots
var g = svg.selectAll(".dot")
.data(baseData)
.enter()
.append("circle")
.attr("class", "dot")
.attr("r", 3.5)
.attr("cx", function(d) {return x(YearFn(d))})
.attr("cy", function(d) {return y(Num_citationsFn(d))})
.style("fill","blue")
.on("click", function(d, i) {
...
})
by
function clickHandler (d,i){
...
}
// draw dots
var g = svg.selectAll(".dot")
.data(baseData)
.enter()
.append("circle")
.attr("class", "dot")
.attr("r", 3.5)
.attr("cx", function(d) {return x(YearFn(d))})
.attr("cy", function(d) {return y(Num_citationsFn(d))})
.style("fill","blue")
.on("click", clickHandler); //clickHandler is referenced here, instead of the original anonymous function
and add also a .on("click", clickHandler); call to your newly created node, i.e. within the clickHandler function itself:
///add linked dots
var g = svg.selectAll(".dot")
.data(baseData)
.enter()
.append("circle")
.attr("class", "dot")
.attr("r", 3.5)
.attr("cx", function(d) {return x(YearFn(d))})
.attr("cy", function(d) {return y(Num_citationsFn(d))})
.style("fill", "red")
.on("click", clickHandler); //click handler is *also* called here
I'm having problems positioning my tooltip dots. I'm using an ordinal X scale and i just can't get it to work...not sure if i have to change my data structure or...any insight would be appreciated. I have included a JS FIDDLE link below
tooltip_container.selectAll("dot")
.data(dataset)
.enter().append("circle")
.attr("r", 5)
.attr("cx", function(d,i) { /* return x(d) ?? */})
.attr("cy", function(d,i) { /* return y(d) ?? */})
JS Fiddle link
If you want to create the tooltip for all the lines you'll need this
tooltip_container.selectAll("dot")
.data(dataset)
.enter().append("circle")
.attr("r", 5)
.attr("cx", function(d,i) { return x(d.month) })
.attr("cy", function(d,i) { return y(d.undecided) })
tooltip_container.selectAll("dot")
.data(dataset)
.enter().append("circle")
.attr("r", 5)
.attr("cx", function(d,i) { return x(d.month) })
.attr("cy", function(d,i) { return y(d.yes) })
tooltip_container.selectAll("dot")
.data(dataset)
.enter().append("circle")
.attr("r", 5)
.attr("cx", function(d,i) { return x(d.month) })
.attr("cy", function(d,i) { return y(d.no) })
I am able to add text to my sketch, but I would like it if I could make my text attached directly to the circle. This means that if a circle gets over-written by another circle, the text will as well. On a higher level not, I am finding the d3 model hard for constructing objects in a way that makes them composable with different shapes, etc. The code seems very procedural to mean so any tips would be greatly appeciated :)
JSFiddle link
var link = "https://api.github.com/orgs/csci-4830-002-2014/repos"
d3.json(link, function(error, data) {
var w = 10000;
var h = 1000;
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
svg.selectAll("line")
.data(data)
.enter()
.append("line")
.attr("x1", 5)
.attr("y1", 5)
.attr("x2", function (d,i){
return 30*d.forks_count;
})
.attr("y2", function (d,i){
return 30*d.open_issues_count;
})
.attr("stroke-width", 2)
.attr("stroke", "black");
svg.selectAll("circle")
.data(data)
.enter()
.append("circle")
.attr("r", 40)
.attr("cx", function(d){ return 30*d.forks_count; })
.attr("cy", function(d){ return 30*d.open_issues_count; })
.attr("stroke", "black")
.attr("stroke-width", 2)
.attr("fill", "white")
svg.selectAll("text")
.data(data)
.enter()
.append("text")
.attr("dx", function(d,i){ return 30*d.forks_count; })
.attr("dy", function(d,i){ return 30*d.open_issues_count; })
.text(function(d){
if (d.name.indexOf("challenge") != -1)
return "C";
else
return "H";
});
});
With the way your code written right now, all the lines will be added first, then all the circles, and finally the texts. SVG will always put elements added later on top. So to achieve what you want, you will need to group them up. To do this, you will need to add a g element for each element of your data
var element = svg.selectAll(".element")
.data(data)
.enter()
.append("g")
.attr("class","element");
Now you can add the line, circle, and text to it
element.append("line")
.attr("x1", 5)
.attr("y1", 5)
.attr("x2", function (d, i) {
return 30 * d.forks_count;
})
.attr("y2", function (d, i) {
return 30 * d.open_issues_count;
})
.attr("stroke-width", 2)
.attr("stroke", "black");
element.append("circle")
.attr("r", 30)
.attr("cx", function (d) {
return 30 * d.forks_count;
})
.attr("cy", function (d) {
return 30 * d.open_issues_count;
})
.attr("stroke", "black")
.attr("stroke-width", 2)
.attr("fill", "white")
element
.append("text")
.attr("dx", function (d, i) {
return 30 * d.forks_count;
})
.attr("dy", function (d, i) {
return 30 * d.open_issues_count+6;
})
.style("text-anchor", "middle")
.text(function (d) {
if (d.name.indexOf("challenge") != -1) return "C";
else return "H";
});
You can check the updated JSFiddle at http://jsfiddle.net/9tp1yun7/2/
I am trying to implement update in Scatterplot with Multiple Series
i guess i need to define key element but not sure how to update series.
svg.selectAll(".series")
//.data(series,function(d) { return Math.random()*35.12})
.data(series,function(d) { return Math.random()*35.12})
.enter().append("g")
.attr("class", "series")
.style("fill", function(d, i) { return z(i); })
.selectAll(".point")
.data(function(d) { return d; })
.enter().append("circle")
.attr("class", "point")
.attr("r", 4.5)
.attr("cx", function(d) { return x(d.x); })
.attr("cy", function(d) { return y(d.y); });
how to update and remove.
thanks for your help