colormap | mapping values to colors and creating PPM images | Map library

by jgreitemann C++ Version: Current License: GPL-2.0

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | colormap Summary

colormap is a C++ library typically used in Geo, Map applications. colormap has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

The following code snippet showcases some of the features of the headers in this repository. For a compilable example, see [test/mandelbrot.cpp][1].

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Support

colormap has a low active ecosystem.

It has 23 star(s) with 9 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

colormap has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of colormap is current.

Quality

colormap has 0 bugs and 0 code smells.

Security

colormap has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

colormap code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

colormap is licensed under the GPL-2.0 License. This license is Strong Copyleft.

Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

Reuse

colormap releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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colormap Key Features

No Key Features are available at this moment for colormap.

colormap Examples and Code Snippets

No Code Snippets are available at this moment for colormap.

Community Discussions

Trending Discussions on colormap

How can I output the product name, the color and its color quantity that is less than 10 as a list?

How to mask seaborn heatmap while keeping the colorbar range

How to modify intervals on matplotlib's qualitative color maps?

Python Plotly scatter 3D plot colormap customization

Rasterio: writing tiff with cmap on float values

Why does merging two bar chart subplots into one change the axis and how can I fix this?

Sort by multiple strings in Array using Javascript

Issue with Mandelbrot smooth coloring

Create a heat map out of three 1D arrays

Seaborn plot with colorbar, centered around 0

QUESTION

How can I output the product name, the color and its color quantity that is less than 10 as a list?

Asked 2022-Mar-27 at 06:17

This is the code that I'm having trouble with.

...

ANSWER

Answered 2022-Mar-27 at 06:17

You can add another filter() to get colours with value less than 10 only as shown below:

Source https://stackoverflow.com/questions/71634075

QUESTION

How to mask seaborn heatmap while keeping the colorbar range

Asked 2022-Feb-27 at 09:44

I am trying to create a visualization of square matrix with seaborn heatmap, where all elements range between 0 and 1. However, I want to only show those greater than some threshold (ex. 0.5) and set other values to 0. Moreover, I want to set the range of colorbar to be shown between 0.5 and 1, but I do not want to adjust the full colormap to range between 0.5 and 1, but keep the original colormap range.

For example, I attach two examples that I tried:

1st example

...

ANSWER

Answered 2022-Feb-27 at 09:34

Your second example seems fine on my end, but here is a simpler alternative:

Use the Reds cmap with vmin=0.5 (no need to alter the cbar's ylim and yticklabels)
Use the mask param to automatically mask thresholded values (no need to zero them out)
Set the "bad" and "under" colors for displaying masked values on the heatmap and colorbar

Source https://stackoverflow.com/questions/71282333

QUESTION

How to modify intervals on matplotlib's qualitative color maps?

Asked 2022-Feb-08 at 12:16

import matplotlib.pyplot as plt
import numpy as np

...

ANSWER

Answered 2022-Feb-08 at 12:16

What about using numpy.clip to set the data below 0.25 to 0.25?

Source https://stackoverflow.com/questions/71033501

QUESTION

Python Plotly scatter 3D plot colormap customization

Asked 2022-Jan-27 at 02:31

I am using plotly. I am getting the plot. The problem is, I am using seasons as colormap. I have used 1 for fall, 2 for winter, ..,4 for summer. Now, the colomap shows these numbers and also 1.5, 2.5 etc. I want to show Names instead of numbers

My code:

...

ANSWER

Answered 2022-Jan-27 at 02:07

You can modify the coloraxis by adding the following lines to your code:

Source https://stackoverflow.com/questions/70871976

QUESTION

Rasterio: writing tiff with cmap on float values

Asked 2022-Jan-08 at 12:13

I have this very simple code:

...

ANSWER

Answered 2022-Jan-05 at 08:42

I finaly have done the trick using theses lines of code:

Source https://stackoverflow.com/questions/70573184

QUESTION

Why does merging two bar chart subplots into one change the axis and how can I fix this?

Asked 2021-Dec-13 at 00:00

I have two dataframes:

...

ANSWER

Answered 2021-Dec-12 at 20:57

You can reindex both dataframes to the same index:

Source https://stackoverflow.com/questions/70326640

QUESTION

Sort by multiple strings in Array using Javascript

Asked 2021-Dec-08 at 05:38

I am trying to sort an array by multiple strings but coming up short. Is this possible or is writing something below the only to achieve this?

Doesn't work:

...

ANSWER

Answered 2021-Dec-08 at 04:39

const colorOrder = ['Red', 'Blue', 'Green'];

const order = data.sort(
  (a, b) =>
    colorOrder.indexOf(a.credits.credit.value) -
    colorOrder.indexOf(b.credits.credit.value)
);

Source https://stackoverflow.com/questions/70269598

QUESTION

Issue with Mandelbrot smooth coloring

Asked 2021-Nov-25 at 09:40

I implemented the regular algorithm to display the Mandelbrot set and colour it, and now I'm working on the smooth colouring features using a 255 colourmap.

This part is already well documented online (and even on this forum) and I choose the most popular way with the renormalization of the escape:

...

ANSWER

Answered 2021-Nov-25 at 09:40

There were two deviations from the linked algorithm that were causing issues:

You were setting the escape radius to a low value (~2) in some cases
You were dividing by the log(R) which was not correct. You should divide by log(2)

Additionally some of the banding was because you were still using a discrete color map. You could use a continuous mapping of value -> hue, but if you want a particular cycle of colors, you can use lerpColor() to smoothly transition from one color and the next based on the difference between the continuous/smooth value and the current index.

Source https://stackoverflow.com/questions/70107312

QUESTION

Create a heat map out of three 1D arrays

Asked 2021-Nov-13 at 03:16

I want to create a heatmap out of 3 1dimensional arrays. Something that looks like this:

Up to this point, I was only able to create a scatter plot where the markers have a different color and marker size depending on the third value:

My code:

...

ANSWER

Answered 2021-Nov-13 at 03:16

I think the functionality you are looking for is provided by scipy.stats.binned_statistic_2d. You can use it to organize values of xf and yf arrays into 2-dimensional bins, and compute the mean of zf values in each bin:

Source https://stackoverflow.com/questions/69950977

QUESTION

Seaborn plot with colorbar, centered around 0

Asked 2021-Oct-25 at 12:15

I am trying to change the default behaviour of seaborn by adding a colormap (a continuous color palette) instead of using the hue argument, which creates bins from a continuous variable. I have found the following code to work, however, I would like to add one more option, to center the color bar at 0, that is 0 gets the color white, and the colors diverge from zero to negative/positive.

...

ANSWER

Answered 2021-Oct-25 at 12:15

Using the c, norm, and cmap key-word arguments which are passed through from seaborn to matplotlib.axes.Axes.scatter (used to colour the points instead of palette) and create a mcolors.TwoSlopeNorm to create the normalisation centred around zero you can generate the plot like so:

Source https://stackoverflow.com/questions/69707509

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install colormap

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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