I am trying to reverse the axis in a chart,what i want is to have to line of the chart running from left to right and the date.now() from right to left? How can i accomplish that?
I have tried to do x: {
reverse: true
},
y:{
reverse: false
}
Actually, you can reverse to arrays. In addition, depending on the situation, You can add new items in reverse.
labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'].reverse(),
data: [65, 59, 80, 81, 56, 55, 40].reverse(),
Trying to set a Mapbox style from a local JSON file in plotly dash app.
mapbox_token = <mytoken>
local_style=
json.load(open(application_root_path+r'/pages/campaignmap/mapbox_style.json'))
fig = go.Figure(
go.Scattermapbox(
mode="lines", fill="toself",
lon=[-10, -10, 8, 8, -10, None, 30, 30, 50,
50, 30, None, 100, 100, 80, 80, 100],
lat=[30, 6, 6, 30, 30, None, 20, 30, 30, 20, 20, None, 40, 50, 50, 40, 40],))
fig.update_layout(
dict1={"mapbox": {"accesstoken": mapbox_token}})
fig.update_layout(
showlegend=False,
margin={'l': 0, 'r': 0, 'b': 0, 't': 0},
mapbox_style=local_style
)
Based on the documentation on the plotly website Mapbox Map Layers in Python (see image below) this should work. The JSON file contains the export of the style from MapBox and it works fine when I use the service URL (second last dot point in image).
I've tried loading the JSON as string, dictionary and file path in the mapbox_style parameter with no luck.
Any ideas on how to make it load?
I've tried the same things you've described and had no luck. I can provide a style URL and it works perfectly, but if I download that style and provide just the style.json representation of that same style, I can't seem to get Plotly to recognize it...
I am using react native svg charts to display some data on line chart .the data is associated with some time which need to be labelled on x axis can anybody tell me how can I do it.
When we look at LineChart, it draws the lines like this.
It accepts 50 as points and 10 points and draws a line between
It accepts 10 as points and 40 points and draws a line between
class LineChartExample extends React.PureComponent {
render() {
const data = [50, 10, 40, 95, -4, -24, 85, 91, 35, 53, -53, 24, 50, -20, -80]
return (
<LineChart
style={{ height: 200 }}
data={data}
svg={{ stroke: 'rgb(134, 65, 244)' }}
contentInset={{ top: 20, bottom: 20 }}
>
<Grid />
</LineChart>
)
}
}
In Laravel 5.6 / vuejs 2.5 application I use vue-chartjs, but my charts looks like :
https://imgur.com/a/ru1dXlm
I want some more:
having several items(artists in my case) I want to see them half-transparent, just as in first example here http://demo.vue-chartjs.org/
having points with values shown as in first example at link above
I need to see all labels in x-direction( I fill labels parameter ) for here
If there source code of demo examples of link above > I searched and did not find...
Thanks!
Well, you should find everything you need in the documentation of chart.js and vue-chart.js
http://www.chartjs.org/docs/latest/
http://vue-chartjs.org/#/home?id=resources
You can add rgb values as a background color to make them transparent.
You can also use gradients as its just a canvas element.
Here is a tutorial:
https://hackernoon.com/creating-stunning-charts-with-vue-js-and-chart-js-28af584adc0a?source=user_profile---------5----------------
Here is the source code of the vue-chartjs demo page:
https://github.com/apertureless/vue-chartjs-demo
(It's a bit outdated as with v3 the creation of chart components changed a bit)
It seems you did not filled the labels correctly.
{
labels: ['Here', 'are', 'your', 'x-axis', 'labels'],
datasets: [
{
label: 'artist 1',
backgroundColor: 'rgba(75, 192, 192, 0.2)',
data: [0, 1, 2, 3, 4],
},
{
label: 'artist 2',
backgroundColor: 'rgba(255, 99, 132, 0.2)',
data: [0, 1, 2, 3, 4],
},
],
}
Can somebody please explain the main differences? I don't have a clear knowledge about these functions in programming for any language.
Some of the basic data structures in programming languages such as C and C++ are stacks and queues.
The stack data structure follows the "First In Last Out" policy (FILO) where the first element inserted or "pushed" into a stack is the last element that is removed or "popped" from the stack.
Similarly, a queue data structure follows a "First In First Out" policy (as in the case of a normal queue when we stand in line at the counter), where the first element is pushed into the queue or "Enqueued" and the same element when it has to be removed from the queue is "Dequeued".
This is quite similar to push and pop in a stack, but the terms enqueue and dequeue avoid confusion as to whether the data structure in use is a stack or a queue.
Class coders has a simple program to demonstrate the enqueue and dequeue process. You could check it out for reference.
http://classcoders.blogspot.in/2012/01/enque-and-deque-in-c.html
Enqueue and Dequeue tend to be operations on a queue, a data structure that does exactly what it sounds like it does.
You enqueue items at one end and dequeue at the other, just like a line of people queuing up for tickets to the latest Taylor Swift concert (I was originally going to say Billy Joel but that would date me severely).
There are variations of queues such as double-ended ones where you can enqueue and dequeue at either end but the vast majority would be the simpler form:
+---+---+---+
enqueue -> | 3 | 2 | 1 | -> dequeue
+---+---+---+
That diagram shows a queue where you've enqueued the numbers 1, 2 and 3 in that order, without yet dequeuing any.
By way of example, here's some Python code that shows a simplistic queue in action, with enqueue and dequeue functions. Were it more serious code, it would be implemented as a class but it should be enough to illustrate the workings:
import random
def enqueue(lst, itm):
lst.append(itm) # Just add item to end of list.
return lst # And return list (for consistency with dequeue).
def dequeue(lst):
itm = lst[0] # Grab the first item in list.
lst = lst[1:] # Change list to remove first item.
return (itm, lst) # Then return item and new list.
# Test harness. Start with empty queue.
myList = []
# Enqueue or dequeue a bit, with latter having probability of 10%.
for _ in range(15):
if random.randint(0, 9) == 0 and len(myList) > 0:
(itm, myList) = dequeue(myList)
print(f"Dequeued {itm} to give {myList}")
else:
itm = 10 * random.randint(1, 9)
myList = enqueue(myList, itm)
print(f"Enqueued {itm} to give {myList}")
# Now dequeue remainder of list.
print("========")
while len(myList) > 0:
(itm, myList) = dequeue(myList)
print(f"Dequeued {itm} to give {myList}")
A sample run of that shows it in operation:
Enqueued 70 to give [70]
Enqueued 20 to give [70, 20]
Enqueued 40 to give [70, 20, 40]
Enqueued 50 to give [70, 20, 40, 50]
Dequeued 70 to give [20, 40, 50]
Enqueued 20 to give [20, 40, 50, 20]
Enqueued 30 to give [20, 40, 50, 20, 30]
Enqueued 20 to give [20, 40, 50, 20, 30, 20]
Enqueued 70 to give [20, 40, 50, 20, 30, 20, 70]
Enqueued 20 to give [20, 40, 50, 20, 30, 20, 70, 20]
Enqueued 20 to give [20, 40, 50, 20, 30, 20, 70, 20, 20]
Dequeued 20 to give [40, 50, 20, 30, 20, 70, 20, 20]
Enqueued 80 to give [40, 50, 20, 30, 20, 70, 20, 20, 80]
Dequeued 40 to give [50, 20, 30, 20, 70, 20, 20, 80]
Enqueued 90 to give [50, 20, 30, 20, 70, 20, 20, 80, 90]
========
Dequeued 50 to give [20, 30, 20, 70, 20, 20, 80, 90]
Dequeued 20 to give [30, 20, 70, 20, 20, 80, 90]
Dequeued 30 to give [20, 70, 20, 20, 80, 90]
Dequeued 20 to give [70, 20, 20, 80, 90]
Dequeued 70 to give [20, 20, 80, 90]
Dequeued 20 to give [20, 80, 90]
Dequeued 20 to give [80, 90]
Dequeued 80 to give [90]
Dequeued 90 to give []
These are terms usually used when describing a "FIFO" queue, that is "first in, first out". This works like a line. You decide to go to the movies. There is a long line to buy tickets, you decide to get into the queue to buy tickets, that is "Enqueue". at some point you are at the front of the line, and you get to buy a ticket, at which point you leave the line, that is "Dequeue".
A queue is a certain 2-sided data structure. You can add new elements on one side, and remove elements from the other side (as opposed to a stack that has only one side). Enqueue means to add an element, dequeue to remove an element. Please have a look here.
Enqueue means to add an element, dequeue to remove an element.
var stackInput= []; // First stack
var stackOutput= []; // Second stack
// For enqueue, just push the item into the first stack
function enqueue(stackInput, item) {
return stackInput.push(item);
}
function dequeue(stackInput, stackOutput) {
// Reverse the stack such that the first element of the output stack is the
// last element of the input stack. After that, pop the top of the output to
// get the first element that was ever pushed into the input stack
if (stackOutput.length <= 0) {
while(stackInput.length > 0) {
var elementToOutput = stackInput.pop();
stackOutput.push(elementToOutput);
}
}
return stackOutput.pop();
}
In my opinion one of the worst chosen word's to describe the process, as it is not related to anything in real-life or similar. In general the word "queue" is very bad as if pronounced, it sounds like the English character "q". See the inefficiency here?
enqueue: to place something into a queue; to add an element to the tail of a queue;
dequeue to take something out of a queue; to remove the first available element from the head of a queue
source: https://www.thefreedictionary.com