We currently are looking for some help in getting solid range lines to appear longitudinally on our charts.
For example: Test A has a range of 0 (Very low), 3 (Moderately low), 5 (Low), 5 to 7 (Normal), 7+ (High), 9+ (Moderately high), and 11+ (Very high).
We're looking for a Red line in the Very high condition, Orange in Moderately high, and Yellow for high. Between the normal range we're looking for a Green line at the upper and lower boundary (between 5 and 7).
I don't have any code to show, but I wanted to make sure that Highcharts was even capable of this. I've attached an image of what I'm looking for. If it is possible and you have an example of some code, please let me know.
Related
I am plotting data where all 3 piece of data for a data point are in the same units.
While the bubble size is correct relative to the other bubbles, I would really like it to scale with the horizontal axis ie for the data below, I would like the bubble to to measure about 30 units across on the x axis.
x(mm)
y(mm)
colour
bubble (mm)
Bubble 1
5
5
1
30
Bubble 2
10
5
1
20
I am pretty sure this is not a native behaviour, and I only need a rough visual match, rather than a fully accurate representation.
Does anyone have any ideas how to bodge this?
Thanks!
I have tried multiplying up the values to enlarge bubble size, but it seems that the size of the largest bubble is fixed
As I only require a visual approximation have also looked at using AppScript to create this (my coding is basic at best) but, while I can open a drawing canvas, there does not seem to be any way to automatically create a drawing from there.
In Vaadin 14.6.1, I tried to create a Vaadin heatmap foollowing the documentation / example from here.
However, I encountered a few problems/questions, listed in descending order of importance below:
The heatmap supported 30 rows by 30 columns; but when I tried 40 rows by 40 columns, the entire heatmap showed a single color (blue in my case).
Is it possible to manually set the minimum numeric value and maximum numeric value for the color scheme. This way, if I plot my data one day and it has values in the range of 0 to 1, but on another dataset from another day, the numeric values range from between 0 and 0.5, the color scheme range won't automatically change (to being between 0 and 0.5) and confuse the user.
In the documentation, it has the following methods listed, but they do not seem to exist in Vaadin 14.6.1
plotOptions.setBorderColor(SolidColor.WHITE);
plotOptions.setBorderWidth(2);
When I hover over the datapoints, is there a way that the tooltip can only show the numeric value (and not the x, y coordinate or the series name etc.?)
Is there any limit to the number of datapoints? I'm hoping that if #1 above is resolved that I can plot a 100 by 100 (ie 10,000) point heatmap.
If I plot 100by100, there will be many labels on the x and y axis. In my case, the x and y axis are actually numerical, so I did what the documentation suggested and just placed category labels in the xaxis and yaxis spots. However, is there any way to only display every "nth" label, so that the x-axis and y-axis is not so crowded? (This would essentially mimic what Vaadin does for normal line charts' xaxis and yaxis).
I'm not that experienced with Vaadin Chart, but these are the questions that I can comment on:
(1) With 40x40 items you go over the threshold of 1000 in which the Chart switches into "turbo" mode for performance reasons. This seems to not be compatible with the heatmap series. You can disable turbo mode by setting plotOptions.setTurboThreshold(0);
(2) Unfortunately the ColorAxis doesn't support this, it only has an API for min and max color. Definitely a valid use-case though, and it seems to be supported by the Highcharts library that the Vaadin Chart uses under the hood. You should consider opening a feature request for this in the Github repo.
(3) This seems to be a documentation issue. The methods are available in later Vaadin platform versions, but not in 14.6.
(5) In theory not, but in practice there will be a huge performance hit in the browser due to the excessive amount of DOM elements (quick test of 100x100 froze the browser for 10s). I'm afraid the component isn't really made for such extreme use-cases. In this case it might be better to utilize a low-level JS drawing library using the canvas, or draw an image on the server-side and display that in the browser. Maybe you can also consider modifying your use-case so that you only display one slice of your data and allow the user to switch between slices.
I've got one value at 12 in a serie almost always between 0 and 5, on a datetime yAxis.
The max is set to this value programmatically.
But without zooming in, you dont see any peak in the line. Tooltip doesn't show this value neither.
The problem is why would a user zoom in, (here or there ?) , as he wont see any peaking tip on the line. (I found the value with the navigator because I knew it should be there.)
Moreover, I end up with a very tiny line of 5 pixels (as my other values are very small), jammed at the bottom of the chart, and a lot of air above until 12 the max !
Any idea welcome.
I'm trying to add text to an image in PSP X6 and I know how to do it but how can I make it look clearer/thinner?
I've created this using Arial (9 pixels) and the default stroke width (1) and not sure what else to do to make the text look less thick...
As a long-time fellow user of Corel's PaintShop Pro (including several versions by JASC before that), I have experienced the "Text" tool fluctuate (in effectiveness) over the years. This can be quite frustrating - as the quality (crispness in particular) of the text seems to vary from version-to-version.. - and sadly X6 (recently superseded by X7) is no exception.
In answer to your question, I would recommend one of the following solutions:
To get the best result with small text:
1) Ensure that the "Anti-alias" option is set to either "Sharp" or "Off".
2) Double-check that the text is not set to Bold (obvious, I know - but easily missed)
3) If possible, try dark greys (rather than pure black) as this can sometimes seem "softer" around the edges.
If you have already checked and/or tried the above, then another option is to use the technique I have adopted many times over the years - as follows:
1) Create your text (e.g. "Previous") but in a separate document - and purposefully set the text size MUCH larger than you need (e.g. 100 Point - the bigger, the better).
2) "Flatten" that image (ensuring you preserve transparency if you plan to overlay your text on a background other than pure white).
3) Resize the image down to the approximate width you require (e.g. 100 Pixels wide) by using the "Image Resize" option and ensuring that "Resample Using" is ticked/checked - and that "Smart Size" is the option used (the others: Bicubic, Bilinear and Weighted Average can also sometimes deliver better results - a little trial and error might be the order of the day until you get the hang of the technique).
Providing the desired end size is not too small, you should find the end results MUCH better than simple typing in at (say..) 9 Point to begin with.
Worth noting that this technique works particularly well for "mid-size" text - but you should also see an improvement for smaller sizes too. So something of a workaround for sure, but it definitely can and does work.
We recently made the switch from JFreeCharts to Highcharts. And our apps teams build small pie charts (fit in 250 by 400 px) on a dashboard, that usually show less than 8 slices. The pie labels are verbose. Highcharts usually clips them off is what I am seeing.
JSFiddle: jsfiddle.net/9tqSn/18/
It is close to what we see on our system even with word wrapping and such. Our customers also hate the fact that the chart size shrinks when labels are long. Do you plan to have a solution to better fit labels in the plot area?
We are running highcharts-3.0.2
Well, this is known bug in Highcharts, see this report.
Here you can find discussion about positioning dataLabels.