Related
KAI ZHAO : How to draw rectangle on image like this: import matplotlib.pyplot as plt
from PIL import Image
import numpy as np
im = np.array(Image.open('dog.png'), dtype=np.uint8)
plt.imshow(im)
I don't know what to do next. tmdavison： You can add patches to m
Francis: Given a graph of a signal in a time representation, how can I draw a line marking the corresponding time index? Specifically, given a signal graph with time indices ranging from 0 to 2.6(s), I want to draw vertical red lines to indicate the correspond
PDRX： To state it in general form, I'm looking for a way to connect multiple points with gradient color lines using matplotlib , but I can't find it anywhere. More specifically, I'm plotting a 2D random walk graph of a single color line. However, since the poi
Rahul: If I have polar coordinates of a line, how can I draw it on an image in OpenCV and python? LineThe function takes 2 points, but only draws line segments. I want to draw a line from one edge of an image to the other. Robert Caspary: Just count 2 points.
PDRX： To state it in general form, I'm looking for a way to connect multiple points with gradient color lines using matplotlib , but I can't find it anywhere. More specifically, I'm plotting a 2D random walk graph of a single color line. However, since the poi
Brown Garden I'm trying to draw a scatter plot in polar coordinates , with contour lines superimposed onto a point cloud. I know how to do this in Cartesian coordinates using :numpy.histogram2d # Simple case: scatter plot with density contours in cartesian coo
Timothy There are only 4 linetypes in matplotlib: ['-', '-. ', '-', ':']. Can one make more than 4 different types of linetypes in matplotlib? jakevdp Using dashesparameters to specify custom dash styles, you can create far more than these four types . E.g: im
KAI ZHAO : How to draw rectangle on image like this: import matplotlib.pyplot as plt
from PIL import Image
import numpy as np
im = np.array(Image.open('dog.png'), dtype=np.uint8)
plt.imshow(im)
I don't know what to do next. tmdavison： You can add patches to m
Retric Here is what I get: draw.line([(x1,y1),(x2,y2)],fill = (255, 255, 255))
The result is a white line, but I want a transparent line, what should I do? Kay Patel As far as I know, the line function takes RGB or RGBA values. try: draw.line([(x1,y1),(x2,y2)
Brown Garden I'm trying to draw a scatter plot in polar coordinates , with contour lines superimposed onto a point cloud. I know how to do this in Cartesian coordinates using :numpy.histogram2d # Simple case: scatter plot with density contours in cartesian coo
Wallace In matplotlib, using plt.plot(xs, ys, '-'+marker). This gives you an undirected line, and you can't tell by looking at the resulting plot which end corresponds to the beginning of the array of data points and which corresponds to the end of the array.
Rahul: If I have polar coordinates of a line, how can I draw it on an image in OpenCV and python? LineThe function takes 2 points, but only draws line segments. I want to draw a line from one edge of an image to the other. Robert Caspary: Just count 2 points.
KhoaLearnToCode I'm having a problem here when trying to draw multiple lines on an image. So, here is my code: fig=plt.figure()
final = cv2.imread('frame9.jpg')
for p in polar:
plt.plot([0,1],[p[0],p[0]],c='red')
plt.imshow(final,cmap=plt.cm.gray)
plt.show
Adrian C I looked at the following thread and it helped, but I wonder if anyone has tried it in a slightly different way. Draw horizontal lines over multiple subplots in python using pyplot Here's what the data looks like so you can test (if necessary) = ctr_d
Brown Garden I'm trying to draw a scatter plot in polar coordinates , with contour lines superimposed onto a point cloud. I know how to do this in Cartesian coordinates using :numpy.histogram2d # Simple case: scatter plot with density contours in cartesian coo
Retric Here is what I get: draw.line([(x1,y1),(x2,y2)],fill = (255, 255, 255))
The result is a white line, but I want a transparent line, what should I do? Kay Patel As far as I know, the line function takes RGB or RGBA values. try: draw.line([(x1,y1),(x2,y2)
Retric Here is what I get: draw.line([(x1,y1),(x2,y2)],fill = (255, 255, 255))
The result is a white line, but I want a transparent line, what should I do? Kay Patel As far as I know, the line function takes RGB or RGBA values. try: draw.line([(x1,y1),(x2,y2)
Retric Here is what I get: draw.line([(x1,y1),(x2,y2)],fill = (255, 255, 255))
The result is a white line, but I want a transparent line, what should I do? Kay Patel As far as I know, the line function takes RGB or RGBA values. try: draw.line([(x1,y1),(x2,y2)
KhoaLearnToCode I'm having a problem here when trying to draw multiple lines on an image. So, here is my code: fig=plt.figure()
final = cv2.imread('frame9.jpg')
for p in polar:
plt.plot([0,1],[p[0],p[0]],c='red')
plt.imshow(final,cmap=plt.cm.gray)
plt.show
second How can I change the line style of the line drawn by ConnectionPatch? The best general line styles are ":", "-" or "-". The ConnectionPatch code I'm using is: con = ConnectionPatch(color=seas_col[iseas],linewidth=2,
xyA=(mean_vals_1[isn,iseas],0),
Brown Garden I'm trying to draw a scatter plot in polar coordinates , with contour lines superimposed onto a point cloud. I know how to do this in Cartesian coordinates using :numpy.histogram2d # Simple case: scatter plot with density contours in cartesian coo
KAI ZHAO : How to draw rectangle on image like this: import matplotlib.pyplot as plt
from PIL import Image
import numpy as np
im = np.array(Image.open('dog.png'), dtype=np.uint8)
plt.imshow(im)
I don't know what to do next. tmdavison： You can add patches to m
Rahul: If I have polar coordinates of a line, how can I draw it on an image in OpenCV and python? LineThe function takes 2 points, but only draws line segments. I want to draw a line from one edge of an image to the other. Robert Caspary: Just count 2 points.
KhoaLearnToCode I'm having a problem here when trying to draw multiple lines on an image. So, here is my code: fig=plt.figure()
final = cv2.imread('frame9.jpg')
for p in polar:
plt.plot([0,1],[p[0],p[0]],c='red')
plt.imshow(final,cmap=plt.cm.gray)
plt.show
Brown Garden I'm trying to draw a scatter plot in polar coordinates , with contour lines superimposed onto a point cloud. I know how to do this in Cartesian coordinates using :numpy.histogram2d # Simple case: scatter plot with density contours in cartesian coo
Retric Here is what I get: draw.line([(x1,y1),(x2,y2)],fill = (255, 255, 255))
The result is a white line, but I want a transparent line, what should I do? Kay Patel As far as I know, the line function takes RGB or RGBA values. try: draw.line([(x1,y1),(x2,y2)
Retric Here is what I get: draw.line([(x1,y1),(x2,y2)],fill = (255, 255, 255))
The result is a white line, but I want a transparent line, what should I do? Kay Patel As far as I know, the line function takes RGB or RGBA values. try: draw.line([(x1,y1),(x2,y2)
KhoaLearnToCode I'm having a problem here when trying to draw multiple lines on an image. So, here is my code: fig=plt.figure()
final = cv2.imread('frame9.jpg')
for p in polar:
plt.plot([0,1],[p[0],p[0]],c='red')
plt.imshow(final,cmap=plt.cm.gray)
plt.show
KhoaLearnToCode I'm having a problem here when trying to draw multiple lines on an image. So, here is my code: fig=plt.figure()
final = cv2.imread('frame9.jpg')
for p in polar:
plt.plot([0,1],[p[0],p[0]],c='red')
plt.imshow(final,cmap=plt.cm.gray)
plt.show
