How can I make a single color Gabor grating?

Coding
1

Hi there.

I’m currently trying to make a single color gabor patch.

Thanks to your legacy, I was able to make seven single-colored gabor patches(red, green, blue, yellow, magenta, cyan, white).

But I still need the eighth colored gabor patch, like purple or orange.

How can I make these color? please your help :sob:

Thanks in advance.

P.S This is the code I used to create colored gabor patch.

redGrat = np.zeros([256,256,3],'f')#the f indicates we want floats 
redGrat[:,:,0] = visual.filters.makeGrating(256,gratType='sin')
redGrat[:,:,1] = -1.0 
redGrat[:,:,2] = -1.0

greenGrat = np.zeros([256,256,3],'f')#the f indicates we want floats 
greenGrat[:,:,0] = -1.0
greenGrat[:,:,1] =  visual.filters.makeGrating(256,gratType='sin')
greenGrat[:,:,2] = -1.0

blueGrat = np.zeros([256,256,3],'f')#the f indicates we want floats 
blueGrat[:,:,0] = -1.0 
blueGrat[:,:,1] = -1.0
blueGrat[:,:,2] = visual.filters.makeGrating(256,gratType='sin')

yellowGrat = np.zeros([256,256,3],'f')#the f indicates we want floats 
yellowGrat[:,:,0] = visual.filters.makeGrating(256,gratType='sin')
yellowGrat[:,:,1] = visual.filters.makeGrating(256,gratType='sin')
yellowGrat[:,:,2] = -1.0

magentaGrat = np.zeros([256,256,3],'f')#the f indicates we want floats 
magentaGrat[:,:,0] = visual.filters.makeGrating(256,gratType='sin')
magentaGrat[:,:,1] = -1.0 
magentaGrat[:,:,2] = visual.filters.makeGrating(256,gratType='sin')

cyanGrat = np.zeros([256,256,3],'f')#the f indicates we want floats 
cyanGrat[:,:,0] = -1.0 
cyanGrat[:,:,1] = visual.filters.makeGrating(256,gratType='sin')
cyanGrat[:,:,2] = visual.filters.makeGrating(256,gratType='sin')

whiteGrat = np.zeros([256,256,3],'f')#the f indicates we want floats 
whiteGrat[:,:,0] = visual.filters.makeGrating(256,gratType='sin')
whiteGrat[:,:,1] = visual.filters.makeGrating(256,gratType='sin')
whiteGrat[:,:,2] = visual.filters.makeGrating(256,gratType='sin')
2

Hi, your code sort of looks like something I am looking for.

I am trying to generate a grating with two alternating colors (such that the two colors are independently determined), and not balance around mean gray.

I cannot successfully run your code, what is it supposed to generate?

Many thanks.