cax | Canvas rendering engine , supports SVG | Animation library
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kandi X-RAY | cax Summary
Canvas rendering engine, supports SVG, compatible with small programs, small games and Web
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QUESTION
For a project, I'm trying to plot on the same figure (using subplots) to "graph". The data have been collected using a database (but for my problem here, I tried to selected only reasonable number of value).
On the left of the figure, I plot the temperature in JFK during 10 consecutive days whereas on the right, I plot a scatter of the temperature in various locations in the US on a specific day.
This is the part where it gets tricky : I'd like to use a colormap
to display the variation of the temperature across the country and even if I've been able to change the color of the colormap
, the dots of the scatter are all with the same color
Here are my variables:
...ANSWER
Answered 2021-Jun-11 at 06:21Thanks to @JohanC, I've been able to fix my issues:
Using scatter1=ax[1].scatter(longitude,latitude,cmap='RdBu',s=20)
and fig.colorbar(scatter1, ax=ax[1], pad=0)
have help ensuring the colorbar
was not overflowing below the graph. This is what I get when I'm inserting these line in my code :
Then, by working on the code by my self, I realized that in order to have the dots in different colors depending on the temperature, I could 'simply' remove the line cmap = plt.cm.RdBu
and, change in the scatter
function (scatter1=
) the value
to temp
: scatter1=ax[1].scatter(longitude,latitude,c=temp,s=20)
QUESTION
I am trying to generate a simple plot of the Iris dataset, plotting sepal length against sepal width. I want to create a colobar next to this figure and label the colobar with ONLY 0, 1 and 2. I succeed in generating the plot and the colorbar, but the labelling of the colorbar doesn't work the way I want it to:
...ANSWER
Answered 2021-Jun-06 at 20:13I edited your code a bit according to this documentation and it did the trick:
QUESTION
I plotted a data with np.NaN. And I also want to change the center value of the colorbar due to the distribution of original data. But when I change the Vmin, Vmax and vcenter value of the colorbar, the color of np.NaN value changes to other colors other than white. So how can I fix that? Here follows the codes:
...ANSWER
Answered 2021-May-29 at 21:18Using the latest matplotlib version (3.4.2), the code seems to work as expected.
QUESTION
I have got the following problem: I have a sequence of letters (a protein sequence) and I would like to give them a colored background based on a value (I have a matching array of numbers). The end result should look something like this:
I tried a pyplot.matshow
by adding my array twice for a 2d array.
ANSWER
Answered 2021-May-29 at 13:16You can provide the labels to sns.heatmap
, which also will take care of choosing the text color depending on the cell's darkness.
QUESTION
I have a parallel coordinates plot with lots of data points so I'm trying to use a continuous colour bar to represent that, which I think I have worked out. However, I haven't been able to remove the default key that is put in when creating the plot, which is very long and hinders readability. Is there a way to remove this table to make the graph much easier to read?
This is the code I'm currently using to generate the parallel coordinates plot:
...ANSWER
Answered 2021-May-15 at 14:13You can use ax.legend_.remove()
to remove the legend.
The cax
parameter of plt.colorbar
indicates the subplot where to put the colorbar. If you leave it out, matplotlib will create a new subplot, "stealing" space from the current subplot (subplots are often referenced to by ax
in matplotlib). So, here leaving out cax
(adding ax=ax
isn't necessary, as here ax
is the current subplot) will create the desired colorbar.
The code below uses seaborn's penguin dataset to create a standalone example.
QUESTION
I had to resetup my python environment and I get this error message:
AttributeError: 'PandasArray' object has no attribute '_str_startswith'
when I try to use the basic GeoDataFrame.plot() function
...ANSWER
Answered 2021-Jan-06 at 03:19Already solved! Had to update pandas to 1.2.0 version and then install the descartes package.
QUESTION
I'm kinda new with Metpy. I've been trying to calculate the temperature advection with Metpy but it's been unsuccessful. Since I'm new with this package, I don't understand why needs to have units to work properly. When I calculate temperature advection I end with some weird lines on my maps and I don't know why. I think it's because of the units or something but I'm not sure. I attach my script below:
...ANSWER
Answered 2021-Apr-19 at 18:28advection
is definitely one of the trickier functions to use in MetPy. Since you're using netcdf4-python to open the files, you definitely want to multiply with the units on the left, like:
QUESTION
I have this df:
...ANSWER
Answered 2021-Apr-06 at 18:16I got the code generally working, though you may still have to solve a couple of formatting issues as well as keep in mind for later the deprecation warning associated with outline_patch
.
I ran the this code with just the first five rows of your dataframe. Notice that I commented out the line relating to COUNTIES
data because I did not have access.
Since the c
argument of ax.scatter()
requires values between 0 and 1, I scaled the values for each month by the max of that month. This means month-to-month variation between maps may not be obvious unless you choose some other way of scaling values
, perhaps on the whole array of month values instead.
QUESTION
With this code i'm creating colorbar scales with the function make_colormap. Source:Create own colormap using matplotlib and plot color scale
...ANSWER
Answered 2021-Apr-06 at 05:21I don't understand the function in the question, but I have coded how to create a legend with a specified color, specified label, and specified ticks, and how to give a color bar a specified tick. Please correct the addition of colors and the tick spacing in the color bar.
QUESTION
I'm creating a colorbar with the function make_colormap. Source: Create own colormap using matplotlib and plot color scale.
Also i'm plotting many maps with for month, data in normals.groupby('MONTH'):
I want to create a color bar with the same values for the same colors (to be able to compare values in maps) but in the:
ANSWER
Answered 2021-Apr-05 at 15:53You could apply a norm
. Using the same norm for all plots would make the colors consistent. It is unclear what the range of your data['PP']
column is. Here is an example of the changes if you would like 100
, 200
and 660
for the three values in the list given to make_colormap
:
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https://unpkg.com/cax@latest/dist/cax.min.js
https://unpkg.com/cax@latest/dist/cax.js
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