jFreeChart: Change Bar color regardless of series - jfreechart

I need to change the color of Bars regardless of their series. so setSeriesPaint() is not useful in this case. Is there another way?

You can override the getItemPaint() method to return the desired color, as suggested here.

Related

How to change the histogram bar thickness?

I want to change the bar thickness of the histogram, is there a way to do it, I'm asking because I didn't find it in the documentation
It's impossible right now, but there is an issue you can subscribe on to get notified when it is done.

How can i disable some of the legend at livechart?

I am using live-chart to plot some series. I also want to add a border to chart area so I added it as a new series. but when I want to show the legend of the main series the legend of border will be appear at chart. Is there any solution to disable this specific legend?
You can change the visibility of a series by changing the Visibility Attribute
e.g:
series.Visibility = Visibility.Hidden;
Not sure If that already solves your problem, since I'm not sure if I understood you correctly. You can also change the z index of a series by using the SetZIndex Method
e.g:
System.Windows.Controls.Panel.SetZIndex(series, 0);

How to detect background color in React

Is there a way to detect the background color at one certain point of the page dynamically? I have a website with a fixed header, and the default logo on it is white (default background is black). However, as I scroll down there are sections that have white background, so the logo would have to change colour to black.
Setting it based on scrolling position is not possible, because all sections have different heights and the height is often dependent on the content.
I have found mix-blend-color, but unfortunately its support is pretty bad across browsers. Also tried numerous npm packages, but none of them seem to pick up the background colour.
Is there another way to dynamically change the logo color without getting the background color?
Answer 1
I never tried this, but I think this might lead to the answer.
You can use document.elementFromPoint.
This will retrieve the top element at some (x, y) point.
So you can set the x and y to 1px down the border of your modal ( or some place where you know that will only have element with the background color you want) and get the element.
And check, on a scroll event listener, what is the element at that position and get it's background color.
Is this a good thing to do? Maybe not, but it works and it have good support across browsers.
Answer 2
Setting it based on scrolling position is not possible
Of course it's possible!
If your modal is with position absolute, what you can do is get the modal's ref and use element.getBoundingClientRect() to get it's position.
Then on each section, you also get the ref (you will have an array of section's ref) in the parent component, which knows the modal's refs and section's ref.
Then, on a scroll event, you use getBoundingClientRect on each section element and check if it's inside the modal logo.
To check if it's inside, you can simply use the top and bottom ( if the scroll is vertical).
This is harder to implement, but I think it's the way to go.

Unable to change ColorPalette property on Telerik Report graph

I'm using the Telerik Reports graph wizard to create a bar chart. Even though I can change the ColorPalette property to GradientPalette and can choose the desired colors, the results are the same flat single color. What am I doing wrong? Thanks for your help and advice.
The Graph's Color Palette applies gradient coloring on the whole series, not on each of the the data points. I believe you're trying to achieve gradient-colored bars, but this feature is not supported. If in your bar chart you define series groups, then the first bar will be colored using the palette's BeginColor, the last bar will be colored with the palette's EndColor all the bars between them will have solid color, calculated based on their count and offset from the BeginColor towards the EndColor.
The Gradient Palette makes much sense when used in the Choropleth, where the color represents an additional data measure - see a demo here.

How do I change the style of a floatingactionbutton?

How do I change the transparency of the text on a Sub floating action button?
Ive tried making a uiid and deriving the floatingactionbutton, which didnt work. And I also made one to derive the floatingactiontext, which also didnt work.
You need to customize the color in two places both in the round border and in the background color while making transparency 0.
See the following screenshots:

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