Bottom Page

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
 Matplotlib contour no data coordinates
I have problem with Matplotlib contour graph. I have graph size (100x100). All "importance" values of CSV which are >0 should be red. Every value <0 should be blue.

My question is, if is possible to have places with no data (no coordinates in CSV) in white color. Now it's couting some average color from nearby points.

This is situation which I have right now:

This is data visualized by points:

This type of graph that I need:

Is possible to get similar graph by using Contour?

This is my code:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.mlab as ml
import pandas as pd

csv_filename = 'data.csv'
df = pd.read_csv(csv_filename)

data = [df.x_pos, df.y_pos]
x = df.x_pos
y = df.y_pos
z = df.importance

ny, nx = 1000, 1000
xmin, xmax = 0, 100
ymin, ymax = 0, 100

xi = np.linspace(xmin, xmax, nx)
yi = np.linspace(ymin, ymax, ny)

zi = ml.griddata(x, y, z, xi, yi, interp='linear')

plt.contour(xi, yi, zi, 1, linewidths = 0, colors = 'k')
plt.pcolormesh(xi, yi, zi, vmin=-1, vmax=1, cmap = plt.get_cmap('bwr'))

#plt.scatter(x, y, marker = 'o', c = z, s = 10, vmin=-1, vmax=1, cmap = plt.get_cmap('bwr'))

plt.xlim(xmin, xmax)
plt.ylim(ymin, ymax)
This is CSV data example:
Full CSV data is here:
bump pls

Top Page

Possibly Related Threads...
Thread Author Replies Views Last Post
  How to make a contour plot in python(matplotli) Ardi 0 84 Nov-28-2019, 04:45 AM
Last Post: Ardi
  Matplotlib Hovering Event displaying (x, y) data RawlinsCross 0 151 Oct-18-2019, 06:13 PM
Last Post: RawlinsCross
  Raycasting GPS coordinates drybulkfreight 10 592 Aug-18-2019, 02:54 PM
Last Post: drybulkfreight
  Contour Sort Explain Killing_Machine 0 476 Aug-18-2018, 10:41 AM
Last Post: Killing_Machine
  How do I get coordinates for addresses from the csv list? BigD 6 2,125 Dec-02-2017, 09:38 PM
Last Post: BigD

Forum Jump:

Users browsing this thread: 1 Guest(s)