色見本作成プログラム

import matplotlib.pyplot as plt
import colorsys
import subprocess

        
def drawfig(ls_h,ls_s,ls_v):
    scolor=defcolor(ls_h,ls_s,ls_v)
    n=len(ls_h)
    m=len(ls_s)
    fsz=9
    xmin=-1.0
    xmax=float(m)
    ymin=-2.0
    ymax=float(n)
    plt.figure(figsize=(9,6),facecolor='w')
    plt.rcParams['font.family'] = 'Ricty Diminished'
    plt.xlim([xmin,xmax])
    plt.ylim([ymax,ymin])
    plt.axis('off')
    # Draw box
    fsz=9 # fontsize
    k=-1
    for i in range(0,n):
        for j in range(0,m):
            k=k+1
            col=scolor[k]
            xs=float(j)
            xe=xs+1.0
            ys=float(i)
            ye=ys+1.0
            rectangle = plt.Rectangle((xs, ys), xe-xs, ye-ys, fc=col,ec=col)
            plt.gca().add_patch(rectangle) 
            xg=0.5*(xs+xe)
            yg=0.5*(ys+ye)
            cn='#000000'
            if 4<=j: cn='#ffffff'
            plt.text(xg,yg,col,rotation=0,ha='center',va='center',fontsize=fsz,color=cn)
    # y-axis label
    fsz=10
    x=-0.15
    for i,h in enumerate(ls_h):
        y=float(i)+0.5
        cn='#000000'
        plt.text(x,y,str(h),ha='right',va='center',fontsize=fsz,color=cn)
    plt.text(x,-0.5,'h',ha='right',va='center',fontsize=fsz,color=cn)
    # x-axis label
    yv=-0.5 # v
    ys=-1.5 # s
    x=-0.5
    for s,v in zip(ls_s,ls_v):
        x=x+1.0
        cn='#000000'
        plt.text(x,ys,'s='+str(s),ha='center',va='center',fontsize=fsz,color=cn)
        plt.text(x,yv,'v='+str(v),ha='center',va='center',fontsize=fsz,color=cn)
    fnameF='fig_col_hsv.jpg'
    plt.savefig(fnameF, dpi=200, bbox_inches="tight", pad_inches=0.2)
    plt.show()


def defcolor(ls_h,ls_s,ls_v):
    scolor=[]
    for ii,h in enumerate(ls_h):
        for s,v in zip(ls_s,ls_v):
            r,g,b=colorsys.hsv_to_rgb(h/360, s/255, v/255)
            ir=int(round(r*255,0))
            ig=int(round(g*255,0))
            ib=int(round(b*255,0))
            hrgb='#{0:02x}{1:02x}{2:02x}'.format(ir,ig,ib)
            scolor=scolor+[hrgb]
    return scolor


def main():    
    ls_h=[0,15,30,45,60,75,90,105,120,135,150,165,180,195,210,225,240,255,270,285,300,315,330,345]
    ls_s=[255,128, 96, 64,255,128, 96, 64,255,128, 96, 64]
    ls_v=[255,255,255,255,192,192,192,192,128,128,128,128]
    drawfig(ls_h,ls_s,ls_v)
    cmd='convert fig_col_hsv.jpg -trim fig_col_hsv.jpg'
    subprocess.call(cmd,shell=True)
 

#==============
# Execution
#==============
if __name__ == '__main__': main()