I've found a lot of good documentation and tried a lot of different formatting but can't seem to get the dates actually ticking.
I realize my example code is a bit complicated but it's doing everything I wanted it to do and I figured I could go back and do the ticking within in a week (I have a filter that changes it to 30 days and 3 months, and all the dates are displayed so I really need to figure out how to properly format the axis for ticks to function:
http://jsbin.com/xacugeko/1/
I tried tickformat but it would just break, I also tried to set the scale to time instead of ordinal but was having trouble getting that to work as well.
New to D3 any assistance is appreciated.
Related
I am working with D3 to try and create a simple bar chart. My x-axis uses ScaleTime and my y-axis uses ScaleLinear. In the pictures below, you can see that the values I've put for the domain (date values) go past the the range. Shouldn't the ticks be confined to the line? Been struggling with this for a while and haven't been able to find anything on the internet.
Graph
Inspect Element
EDIT
After applying .clamp, this is the result
New Graph
And here is the main part of my code I'm looking at (some of the values are arbitrary)
Code
I think this is because clamping is disabled by default on time scales:
Constructs a new time scale with the specified domain and range, the default interpolator and clamping disabled.
It's hard to suggest a fix without seeing your code, but try something like this:
d3.scaleTime()
.domain([domain)
.range([range])
.clamp(true)(Date.now())
I've made this chart using canvas.js, the problem is it shows data on april (it uses date and time as X axis) and there is no data for april.
It comes from a 3 month Bitcoin chart, it was too much data so i only left some days here, the chart looks ugly like this but it shows the problem perfectly. My complete charts also has some drawing problems but I assume it's al related to this data that went to april. See fiddle link.
enter code here (not sure why i'm asked to enter code when my code is in that fiddle)
fiddle:
https://jsfiddle.net/K82z6/300/
Ouch, month is cero based when creating the date on canvasjs. Resolved.
I have the following result set giving me a specific status of an item . I need to build a SSRS 2015 Gantt chart to represent this data. I am having difficulty getting the data to display.
Result Set: StatusDate,Status,BegDate,EndDate, StatusDays
In the chart, I want the category to be on monthly intervals of the range provided (BegDate – EndDate) and the series to be each DAY in the range provided (BegDate – EndDate).
The bars should represent the item being Up or Down with “Up” being Green and “Down” being black for each day (x-axis) of each month (y-axis).
Hoped for Results
The current preview shows the X & Y axis' correctly, but does not show any "bars" to represent the data.
This is my first chart using SSRS and I am quite lost. Does anyone know where I can get a true tutorial on Range Bar Charts for SSRS 2015 or how I might overcome this “data Display” challenge I am stuck on? I appreciate any direction / guidance offered.
This issue was ultimately resolved by #AlanSchofield through another (and probably more clear) question, found here.
After choosing the correct chart, setting the correct properties, and determining the correct values I was able to get the chart I needed, but the behavior was still off. It would not show the a status more than once.
To fix this, and simply put, I needed to sort my data using Dense_Rank and then add the new "sort" column to my Series Group in the Chart properties. Worked like a charm!
Also got some useful guidelines on this blog post.
Need to display line in a line-chart , with the ability to move the tiles, to see a max bitrate value line, to see labels and axis pointers on hover, grouped with a table and time Slider.Y dimension needs to display "bitrate total" or "bitrate Avg" (as defined in code). X dimension needs to display 15 min interval in scope of weeks.
I can upload my data into a table but not into the line graph. I can see points on the graph using .renderDataPoints() but no lines.
I checked the data - could not find any null/NaN values being returned, not using any old version of colors.
The code can be found in https://jsfiddle.net/dani2011/bu2ag0f7/8/. Tried to replace my CSV with var data but nothing is being displayed at the moment in the fiddle. The code as whole is displayed in https://groups.google.com/forum/#!topic/dc-js-user-group/MEslyF2RWRI
Any help would be greatly appreciated.
Here's my go-to-answer for how to put data into a jsFiddle. Basically it's easiest to stick it in an unused tag in the HTML. bl.ocks.org / blockbuilder.org is easier for this.
Here's a fork of your fiddle with the data loaded that way:
http://jsfiddle.net/gordonwoodhull/bu2ag0f7/17/
I also had to remove the spaces from the column names, because those got d3.csv confused and caused the BITRATE calculations to fail.
There was also some stray code inside the renderlet which was failing with a complaint about dim not existing.
The main reason why data was not displaying was because the input groups were not producing usable aggregated data. Your data is very close together in time, so aggregating by week would aggregate everything.
The way to debug this is to put a breakpoint or a console.log before the chart initialization and look at the results of group.all()
In this case bitrateWeekMinIntervalGroupMove and minIntervalWeekBitrateGroup were returning an array with one key/value pair. No lines can be drawn with one point. :)
It looks like you originally wanted to aggregate by 15 minute intervals, so let's get that working.
For whatever reason, there are two levels of aggregation in crossfilter, the dimension level and the group level. The dimension will have first crack at generating a key, and then the group will further refine these keys.
Your min15 function will map each time-key to the 15-minute mark before it, but it needs data that is higher than 15 minutes in resolution. So let's put these groups on the dateDimension, which hasn't already been mapped to a lower resolution:
var minIntervalWeekBitrateGroup = dateDimension.group(min15).reduceSum(function (d) {
return +d.BITRATE
});
var bitrateWeekMinIntervalGroupMove = dateDimension.group(min15).reduce(
...
Great, now there are 30 data points. And it draws lines.
I made the dots a bit smaller :) because at 30 pixels it was hard to see the lines.
Zooming in using the range chart reveals more of lines:
There still seem to be glitches in the reduce function (or somewhere) because the lines drop to zero when you zoom in too far, but hopefully this is enough to get you moving again.
My fork of your fiddle: http://jsfiddle.net/gordonwoodhull/bu2ag0f7/25/
I am trying to show machine states over time. Part of this is to reproduce/automate a report that used to be done by hand. It consists of coloring 2minute 'time slices' in Excel based on what the machine is doing.
(Sorry, not enough reputation to post a picture, but it is a classic heatmap where the state drives the color. Some non DC-JS fiddle: http://jsfiddle.net/ww6Lbnc5/4/)
I was able to generate most of what I want in the following jsfiddle:
http://jsfiddle.net/hwhfxz2t/14/
See fiddle for code.
The total state duration (for selected time frame) is shown in the pieChart, followed by the individual state lines and then the heatmap that people are used to. (the ZOOM and date selection buttons do not work in the fiddle but are there to select specific data ranges or zoom in if you like).
The line charts uses the original representation of the states, which consists of a time the state is entered and a duration.
In order to make the heat map work, I had to (I think) take the original data and convert it into individual minute chunks and mark them with a state. So for instance the original data specifying:
RUN state starting 14:30 for 300 seconds
becomes:
14:30=RUN, 14:31=RUN, 14:32=RUN, 14:33=RUN and 14:34=RUN
The code in lines 233-297 loops through the original data and generates a new one that does this. In cases where there is more than one state within a given minute, the last state survives.
This works okay but it seems that this code is exactly what is normally done in group().reduce(add,remove,init). But in this case I need to add multiple timeslots depending on the duration of a state.
Also, because it is now using a different crossfilter, maps do not update each other.
Here are my questions related to this:
Can I display a heatmap without supplying information for all individual
'cells'? (i.e. straddle cells based on a value, similar to rowspan in a table)
Can I add multiple values at once inside group().reduce()?
Is there an easy way to invert the yAxis so 0 is at the top?
When clicking a row in the heatmap, it selects a column and vice-versa?
I'm not sure if this should be in the crossfilter group. If so please ignore my rambling. If someone knows how to keep the charts linked by grouping better, please let me know.
--Nico
Concerning Question 3:
DC.js heatmaps currently do not support custom order functions on axis but there is a pull request that has been merged into the developing branch and should be accessible to the public soon.
You could manually edit the dc.js file to set the sorting in heatmaps to a custom function. In the latest (2.0.0-beta10) version it is the following line:
rowValues.sort(d3.ascending);
and accordingly
colValues.sort(d3.ascending);