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I cannot select the ("text") in my svg when I want to change the values

I have a problem where I can append the text into SVG but when I want it to change I can't seem to select it to change. The code above the d3.select("button") all works as well as the bar.transition. Can someone help me figure out how to select the "text" so when I click the button it'll use the new dataset?
var bar = svg.selectAll("rect")
.data(dataset)
.enter();
bar.append("rect")
.attr("x", function(d) {
return xScale(d[0]);
})
.attr("y", function(d) {
return yScale(d[2]);
})
.attr("width", xScale.bandwidth())
.attr("height", function(d) {
return height - yScale(d[2]);
})
.attr("class", function(d) {
var s = "bar ";
if (d[2] < 50) {
return s + "bar1";
} else if (d[2] < 100) {
return s + "bar2";
} else {
return s + "bar3";
}
});
bar.append("text")
.attr("dy", "1.3em")
.attr("x", function(d) {
return xScale(d[0]) + xScale.bandwidth() / 2;
})
.attr("y", function(d) {
return yScale(d[2]);
})
.attr("text-anchor", "middle")
.attr("font-family", "sans-serif")
.attr("font-size", "11px")
.attr("fill", "black")
.text(function(d) {
return d[2];
});
d3.select("button")
.on("click", function() {
var dataset = [
['Jun-19', 8.6, 21.7],
['Jul-19', 8.68, 17.98],
['Aug-19', 8.9, 25.38],
['Sep-19', 6.38, 11.6],
['Oct-19', 10.36, 65.08],
['Nov-19', 22.36, 125.72],
['Dec-19', 26.52, 112.22],
['Jan-20', 21.08, 76.1],
['Feb-20', 6, 44, 19.625],
['Mar-20', 4.68, 8.95],
['Apr-20', 7.4, 15.94],
['May-20', 7.36, 18.36]
];
bar = svg.selectAll("rect")
.data(dataset);
bar.transition()
.attr("x", function(d) {
return xScale(d[0]);
})
.attr("y", function(d) {
return yScale(d[2]);
})
.attr("width", xScale.bandwidth())
.attr("height", function(d) {
return height - yScale(d[2]);
})
.attr("class", function(d) {
var s = "bar ";
if (d[2] < 30) {
return s + "bar1";
} else if (d[2] < 60) {
return s + "bar2";
} else {
return s + "bar3";
}
});
svg.selectAll("text")
.data(dataset)
.transition()
.attr("dy", "1.3em")
.attr("x", function(d) {
return xScale(d[0]) + xScale.bandwidth() / 2;
})
.attr("y", function(d) {
return yScale(d[2]);
})
.attr("text-anchor", "middle")
.attr("font-family", "sans-serif")
.attr("font-size", "11px")
.attr("fill", "black")
.text(function(d) {
return d[2];
});
});
I've tried using bar.selectAll("text") but it doesn't work at all, but if I use svg.selectAll("text") it takes the ticks from my Axis.Left and moves it.

You cannot append text nodes as children of rect nodes - so the SVG probably never renders. Try using a g node per bar, and adding both the rect and the text to that. You can give it class barContainer, for example.
As for selecting the text and ignoring those from the axes, do as #Andrew Reid said in his comment and use barContainer.selectAll("text"). Alternatively, you can give all labels the class label and then use svg.selectAll(".label").

D3js labels on grouped bar chart

I'm trying to put labels on my d3js grouped bar chart, which is supposed to be easy, but I haven't been able to do it correctly. I know it must be similar to the way I'm adding the rects but no.. I tried to follow this example but it didn't work.
This is how I add my rectangles:
var rectG = pp.selectAll('rect')
.data(dataFilter);
rectG.exit().remove();
var rectGEnter= rectG.enter().append("g")
.append("g")
.attr("transform", function(d) {return "translate(" + x(d.group) + ",0)"; })
.selectAll("rect")
.data(function(d) { return subgroups.map(function(key) {return {key: key, value: d[key]}; }); })
.enter().append("rect")
.attr("x", function(d) { return xSubgroup(d.key); })
.attr("y", function(d) { return y(d.value? d.value : 0); })
.attr("width", xSubgroup.bandwidth())
.attr("height", function(d) { return height - y(d.value? d.value : 0); })
.attr("fill", function(d) { return getColor(d.key); })
so I tried to do the same with the lables but didn't work, except for this:
rectGEnter= rectG.enter().append("g")
.append("g")
.attr("transform", function(d) {return "translate(" + x(d.group) + ",0)"; })
.selectAll("text")
.data(function(d) { return subgroups.map(function(key) {return {key: key, value: d[key]}; }); })
.enter().append("text")
.attr("x", function(d) { return xSubgroup(d.key)+1; })
.attr("y", function(d) { return y(d.value? d.value : 0); })
.attr("text-anchor", "start")
.style("alignment-baseline", "middle")
.text(function(d) { return (d.value? d.value : 0); });
}
and if ok for the first time, but if I update my data the labels don't update well, I haven an example here, any help will be apreciate

If I understand right you only want to remove the old labels. I tried it in you plunker. The following line of code does the trick.
function updates(selectedGroup) {
pp.selectAll("rect").remove();
pp.selectAll("text").remove(); // <-- remove the old text elements
...
EDIT:
To prevent the removal of the labels we can simply add a class to specify which text we want to remove.
rectGEnter= rectG.enter().append("g")
.append("g")
.attr("transform", function(d) {return "translate(" + x(d.group) + ",0)"; })
.selectAll("text")
.data(function(d) { return subgroups.map(function(key) {return {key: key, value: d[key]}; }); })
.enter().append("text")
.attr('class', 'valueLabels') // <-- Here we add a class
.attr("x", function(d) { return xSubgroup(d.key)+1; })
.attr("y", function(d) { return y(d.value? d.value : 0); })
.attr("text-anchor", "start")
.style("alignment-baseline", "middle")
.text(function(d) { return (d.value? d.value : 0); });
Now we can specify the class when removing the elements.
function updates(selectedGroup) {
pp.selectAll("rect").remove();
pp.selectAll('g').selectAll('g').selectAll("text.valueLabels").remove(); // <-- remove the old text elements
...

D3 V4 Multi series line chart: Adding data points to lines with same color as lines

I am trying to add points to multi series line chart with D3 V4 in Angular-cli. Following is what I am trying.
var lookBookData = z.domain().map(function (name) {
return {
name: name,
values: data.map(function (d) {
return {date: d.date, lookbookcount: d[name]};
})
};
});
console.log(lookBookData);
x.domain(d3.extent(data, function (d) {
console.log(d)
return d.date;
}));
y.domain([
d3.min(lookBookData, function (c) {
return d3.min(c.values, function (d) {
return d.lookbookcount;
});
}),
d3.max(lookBookData, function (c) {
return d3.max(c.values,
function (d) {
return d.lookbookcount;
});
})
]);
z.domain(lookBookData.map(function (c) {
console.log(c);
return c.name;
}));
// Add the X Axis
svg.append("g")
.style("font", "14px open-sans")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x).tickFormat(d3.timeFormat("%d/%m")));
// Add the Y Axis
svg.append("g")
.style("font", "14px open-sans")
.call(d3.axisLeft(y));
// Add Axis labels
svg.append("text")
.style("font", "14px open-sans")
.attr("text-anchor", "end")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.text("Sales / Searches");
svg.append("text")
.style("font", "14px open-sans")
.attr("text-anchor", "end")
// .attr("x", 6)
.attr("dx", ".71em")
.attr("transform", "translate(" + width + "," + (height +
(margin.bottom)) + ")")
.text("Departure Date");
var chartdata = svg.selectAll(".chartdata")
.data(lookBookData)
.enter().append("g")
.attr("class", "chartdata");
chartdata.append("path")
.attr("class", "line")
.attr("d", function (d) {
return line(d.values);
})
.style("fill", "none")
.style("stroke", function (d) {
return z(d.name);
})
.style("stroke-width", "2px");
chartdata.append("text")
.datum(function (d) {
return {
name: d.name, value: d.values[d.values.length - 1]
};
})
.attr("transform", function (d) {
return "translate(" +
x(d.value.date) + "," + y(d.value.lookbookcount) + ")";
})
.attr("x", 3)
.attr("dy", "0.35em")
.style("font", "14px open-sans")
.text(function (d) {
return d.name;
});
// add the dots with tooltips
chartdata.selectAll(".circle")
.data(function (d) {
return d.values;
})
.enter().append("circle")
.attr("class", "circle")
.attr("r", 4)
.attr("cx", function (d) {
console.log(d);
return x(d.date);
})
.attr("cy", function (d) {
return y(d.lookbookcount);
})
.style("fill", function(d) { // Add the colours dynamically
console.log(d);
return z(d.name);
});
Chart is creating... Points are there but their colors are not matching with the colors of lines. Something like below.
Any suggestions of what I have done wrong with my code.
Thank You

The problem is that the data points that are used to draw the circles don't contain name parameter. For all the circles d.name is undefined and they are all colored the same (third color from the z scale, which happens to be green). The easiest solution should be to add the name parameter to data points like this:
var lookBookData = z.domain().map(function (name) {
return {
name: name,
values: data.map(function (d) {
return {date: d.date, lookbookcount: d[name], name: name};
})
};
});

If you apply the fill to the group the children will inherit that style.
chartdata.style("fill", function(d) {
return z(d.name);
})
.selectAll(".circle")
.data(function (d) {
return d.values;
})
.enter().append("circle")
.attr("class", "circle")
.attr("r", 4)
.attr("cx", function (d) {
console.log(d);
return x(d.date);
})
.attr("cy", function (d) {
return y(d.lookbookcount);
});
The way your code is doing right now, after you bind the data using just the values, the circles have no reference to name anymore.
PS: applying styles to groups will change all their children. So, a solution following #Tormi approach may suit you better.

Data not being redrawn after being filtered on d3 bar chart

I've been trying to add a filter to a bar chart. The bar is removed when I click on the legend, but when I try to reactivate the bar is not being redrawn.
Here is a plnk;
http://plnkr.co/edit/GZtErHGdq8GbM2ZawQSD?p=preview
I can't seem to work out the issue - if anyone could lend a hand?
Thanks
JS code;
// load the data
d3.json("data.json", function(error, data) {
var group = [];
function updateData() {
group = [];
var organization = data.organizations.indexOf("Org1");
var dateS = $("#selectMonth").text()
for (var country = 0; country < data.countries.length; country++) {
var date = data.dates.indexOf(dateS);
group.push({
question: data.organizations[organization],
label: data.countries[country],
value: data.values[organization][country][date]
});
}
}
function draw(create) {
updateData();
x.domain(group.map(function(d) {
return d.label;
}));
y.domain([0, 100]);
// add axis
// Add bar chart
var bar = svg.selectAll("rect")
.data(group);
if (create) {
bar
.enter().append("rect")
.attr('x', function(d) {
return x(d.label);
})
.attr('y', function(d) {
return y(d.value);
})
.attr('width', x.rangeBand())
.attr('height', function(d) {
return height - y(d.value);
});
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll("text")
.style("text-anchor", "end")
.attr("dx", "-.8em")
.attr("dy", "-.55em")
.attr("transform", "rotate(-90)");
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 5)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Value");
}
bar
.transition()
.duration(750)
.attr("y", function(d) {
return y(d.value);
})
.attr("height", function(d) {
return height - y(d.value);
});
// Existing code to draw y-axis:
var legendGroups = d3.select("#legend")
.selectAll(".legendGroup")
.data(group, function(d) {
return d.label; // always try and use a key function to uniquely identify
});
var enterGroups = legendGroups
.enter()
.append("g")
.attr("class", "legendGroup");
legendGroups
.exit()
.remove();
legendGroups
.attr("transform", function(d, i) {
return "translate(10," + (10 + i * 15) + ")"; // position the whole group
});
enterGroups.append("text")
.text(function(d) {
return d.label;
})
.attr("x", 15)
.attr("y", 10);
enterGroups
.append("rect")
.attr("width", 10)
.attr("height", 10)
.attr("fill", function(d) {
return "#bfe9bc";
})
.attr("class", function(d, i) {
return "legendcheckbox " + d.label.replace(/\s|\(|\)|\'|\,|\.+/g, '')
})
.on("click", function(d) {
d.active = !d.active;
d3.select(this).attr("fill", function(d) {
if (d3.select(this).attr("fill") == "#cccccc") {
return "#bfe9bc";
} else {
return "#cccccc";
}
})
var result = group.filter(function(d) {
return $("." + d.label.replace(/\s|\(|\)|\'|\,+/g, '')).attr("fill") != "#cccccc"
})
x.domain(result.map(function(d) {
return d.label;
}));
bar
.select(".x.axis")
.transition()
.call(xAxis);
bar
.data(result, function(d) {
return d.label.replace(/\s|\(|\)|\'|\,|\.+/g, '')
})
.enter()
.append("rect")
.attr("class", "bar")
bar
.transition()
.attr("x", function(d) {
return x(d.label);
})
.attr("width", x.rangeBand())
.attr("y", function(d) {
return y(d.value);
})
.attr("height", function(d) {
return height - y(d.value);
});
bar
.data(result, function(d) {
return d.label.replace(/\s|\(|\)|\'|\,|\.+/g, '')
})
.exit()
.remove()
});
}

The bar disappear because you totally remove it with
.remove()
What you can do is hide the element when not selected like that :
d3.selectAll('.graph').selectAll("rect").attr("visibility", function(e) {
return e.active ? "hidden" : "";
})
See http://plnkr.co/edit/2UWaZOsffkw1vkdIJuSA?p=preview

D3JS refreshing graph for new Data

I'm trying to update the graph with a new csv file (data2.csv) by calling update but the graph isnt changing. The code as below is the function that would be called when I click a button.
Plnkr is the sample code..
Do advice!
http://plnkr.co/edit/pOYqmaOxy1lmY82jlhfA
<script>
function update(){
d3.csv("data2.csv", function(error, data) {
if (error) throw error;
var ageNames = d3.keys(data[0]).filter(function(key) { return key !== "State"; });
data.forEach(function(d) {
d.ages = ageNames.map(function(name) { return {name: name, value: +d[name]}; });
});
x0.domain(data.map(function(d) { return d.State; }));
x1.domain(ageNames).rangeRoundBands([0, x0.rangeBand()]);
y.domain([0, d3.max(data, function(d) { return d3.max(d.ages, function(d) { return d.value; }); })]);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Population");
var state = svg.selectAll(".state")
.data(data)
.enter().append("g")
.attr("class", "g")
.attr("transform", function(d) { return "translate(" + x0(d.State) + ",0)"; });
state.selectAll("rect")
.data(function(d) { return d.ages; })
.enter().append("rect")
.attr("width", x1.rangeBand())
.attr("x", function(d) { return x1(d.name); })
.attr("y", function(d) { return y(d.value); })
.attr("height", function(d) { return height - y(d.value); })
.style("fill", function(d) { return color(d.name); });
var legend = svg.selectAll(".legend")
.data(ageNames.slice().reverse())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function(d) { return d; });
});
}
</script>

You say you want to update an existing graph with your update function and new data coming from an csv after some event occurs, correct?
D3 stands for Data Driven Documents, so your data is very important when drawing graphs. D3 works with selections (or collections if that works better for you) based on the data you want to display.
Say you want a barchart displaying the following array: [10,20,30]. The height of the bars is in function with the data in the array.
creating new elements
If you dont have bar elements on the page already, that means you will need to 'append' them to the graph. This is usually done with a code pattern resembling like:
svg.selectAll("rect")
.data(function(d) { return d.ages; })
.enter().append("rect")
.attr("width", x1.rangeBand())
.attr("x", function(d) { return x1(d.name); })
.attr("y", function(d) { return y(d.value); })
.attr("height", function(d) { return height - y(d.value); })
.style("fill", function(d) { return color(d.name); });
With this code, you take the svg variable (which is basically a d3 selection containing one element, the svg) and you select all "rect" elements on the page but inside the svg element. There are none at this very moment, remember, you are going to create them. After the selectAll, you see the data function which specifies the data that will be bound to the elements. Your array contains 3 pieces of data, that means that you expect ot see 3 bars. How will D3 know? It will because of the .enter() (meaning: which elements are not on the graph yet?) and the .append(element) functions. The enter function basically means: In my current d3 selection (being selecAll('rect') ), how many of the specified elements do i need to append? Since you current selection is empty (you dont have 'rect' elements yet), and d3 spots 3 pieces of data in your data function, using .append() it will create and append 3 elements for you. With the attr fuctions you can specify how the elements will look like.
updating elements
Suppose my array of [10,20,30] suddenly changes to [40,50,60]. notice something very important here, my array still contains 3 pieces of data! It is just their value that changed!
I would really want to see my bars reflecting this update! (and i think your case matches this one).
But if I use this pattern again, what will happen?
state.selectAll("rect")
.data(function(d) { return d.ages; })
.enter().append("rect")
.attr("width", x1.rangeBand())
...
The state.selectAll("rect") selection contains 3 elements, d3 checks how many pieces of data you have (still 3) and it sees that it doesnt need to append anything!
Does that mean you cannot update with D3? Absolutely not! It is just much simpler then you would think :-).
If i would want to update my bars so that their height reflects the new values of my data, I should do it like this:
state.selectAll("rect")
.data(function(d) { return d.ages; })
.attr("height", function(d) { return height - y(d.value); });
Basically, I select all my rects, I tell d3 what data i am working on and then I simply tell d3 to alter the height of of my rect. You can even do it with a transition! (more info on transitions here ). I think this is what you need to do, instead of appending the "rect" elements again.
Updating elements, part 2
continuing with my example, what do to if my array all of a sudden wouuld be like this: [100,200,300, 400]? Note that my values changed again BUT there is an extra element there!!
Well, when handling the event (for example a click on a button, or a submit of data) that changes the data, you need to tell D3 that it will need to append something and update the existing bars. This can simply be done by doing coding both patterns:
state.selectAll("rect")
.data(function(d) { return d.ages; })
.enter().append("rect")
.attr("width", x1.rangeBand())
.attr("x", function(d) { return x1(d.name); })
.attr("y", function(d) { return y(d.value); })
.attr("height", function(d) { return height - y(d.value); })
.style("fill", function(d) { return color(d.name); });
state.selectAll("rect")
.data(function(d) { return d.ages; })
.attr("height", function(d) { return height - y(d.value); });
Removing elements
What if my data array would suddenly only consist of only 2 pieces of data: [10,20] ?
Just like there is a function for telling d3 that it needs to append something, you can tell it that it what to do with elements that dont seem to have data to be bound on anymore:
svg.selectAll("rect")
.data(function(d) { return d.ages; })
.exit().remove();
The exit function matches the amount of pieces of data you have vs the amount of selected elements. The exit function then tells d3 to drop those elements.
I hope this was helpfull. It is a bit of a basic explanation (its a little more complicated then that) but I had to hurry, so if there should be questions or errors, please tell me.

d3.csv("data2.csv", function(error, data) {
if your server is caching this reference - try a Math.random() :D
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/random
This will force(ish) a refresh of data - could be costly so triage according to your needs via a serverside process
edit:
d3.csv("data2.csv?=" + (Math.random() * (100 - 1) + 1), function(error, data) {
would be the alteration. Its sloppy but illustrates how to suggestively force a cache refresh

You can do it like this:
Make a buildMe() function which makes the graph.
function buildMe(file) {//the file name to display
d3.csv(file, function(error, data) {
if (error) throw error;
var ageNames = d3.keys(data[0]).filter(function(key) {
return key !== "State";
});
data.forEach(function(d) {
d.ages = ageNames.map(function(name) {
return {
name: name,
value: +d[name]
};
});
});
x0.domain(data.map(function(d) {
return d.State;
}));
x1.domain(ageNames).rangeRoundBands([0, x0.rangeBand()]);
y.domain([0, d3.max(data, function(d) {
return d3.max(d.ages, function(d) {
return d.value;
});
})]);
svg.selectAll("g").remove();//remove all the gs within svg
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Population");
var state = svg.selectAll(".state")
.data(data)
.enter().append("g")
.attr("class", "g")
.attr("transform", function(d) {
return "translate(" + x0(d.State) + ",0)";
});
state.selectAll("rect")
.data(function(d) {
return d.ages;
})
.enter().append("rect")
.attr("width", x1.rangeBand())
.attr("x", function(d) {
return x1(d.name);
})
.attr("y", function(d) {
return y(d.value);
})
.attr("height", function(d) {
return height - y(d.value);
})
.style("fill", function(d) {
return color(d.name);
});
var legend = svg.selectAll(".legend")
.data(ageNames.slice().reverse())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) {
return "translate(0," + i * 20 + ")";
});
legend.append("rect")
.attr("x", width - 18)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
legend.append("text")
.attr("x", width - 24)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.text(function(d) {
return d;
});
});
}
Then on Load do this buildMe("data.csv");
On button click do this
function updateMe() {
console.log("Hi");
buildMe("data2.csv");//load second set of data
}
Working code here
Hope this helps!