需要根據不同的數值生成不同色彩的小方塊，並標明數值，考慮到各種色彩的方塊，如果採用文字採用黑色或者白色總是避免不了和背景色重複，所以把數值轉化成rgb(0x11,0xf0,0x3b)類似的值，然後文字採用rgb(255-0x11,255-0xf0,255-0x3b)，要把背景色的rgb轉成十進位制再進行減法操作，這裡為了方便陳述，用的十六進位制沒有轉。
這裡的filename為需要做方塊圖的數值，按一定格式存在此檔案中例如：
11&330&a346&5789&
44&c3&20&11
按自己數值存放的格式解析就好了，總之得到需要作圖的數值，按一定的方式轉成rgb後再作圖，或者自己挑選幾種、幾十種類似這樣的#0012ce色彩值對應自己的數值也行，

import numpy as np
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import os
import cv2
import re #按固定長度擷取字串
img_output_path='/home/xxx/image/'
class draw_sequences():
    def __init__(self, idx):
        #背景顏色為黑色的畫布
        #im = np.zeros((300, 300, 3), dtype="uint8") #3
        #背景顏色為白色的畫布`
        self.im = np.ones((800,600,3),np.uint8)*255
        #畫布使用預設字型
        self.font = cv2.FONT_HERSHEY_SIMPLEX
        #起始作圖座標
        self.leftx = 10
        self.lefty = 10
        #矩形單元長高
        self.len = 70
        self.high = 15
        self.filepath = img_output_path + '/' + idx
        #第idx張畫布（也許一張不夠）
        self.idx = idx
        self.bdraw = False
        self.filename = filename
    #畫一個矩形序列單元
    def draw_sequence(self, listseq):
        if self.leftx + self.len > 600:
            self.leftx = 10
            self.move_down()
        self.bdraw = True
        #矩形邊框顏色
        #cv2.rectangle(self.im, (self.leftx, self.lefty), (self.leftx+self.len, self.lefty+self.high), (int(listseq[0],16),int(listseq[1],16),int(listseq[2],16))) #12
        #填充矩形顏色
        rseq = int(listseq[0],16)
        gseq = (int(listseq[1],16)+100)%255
        bseq = (int(listseq[2],16)+50)%255
        cv2.rectangle(self.im, (self.leftx, self.lefty), (self.leftx+self.len, self.lefty+self.high), (rseq, gseq, bseq), thickness=-1)
        #填充文字
        seq = "&".join(str(i) for i in listseq)
        cv2.putText(self.im,seq,(self.leftx, self.lefty+10), self.font, 0.4, (255-rseq, 255-gseq,255-bseq), 1)
        self.move_right()

    #儲存序列圖
    def write_jpg(self):
        if self.bdraw == True:
            cv2.imwrite(self.filepath + ".jpg", self.im)
            self.idx = self.idx + 1
            self.__init__(self.idx)

    #往右移一個位置畫序列單元
    def move_down(self):
        self.lefty = self.lefty + self.high
        self.leftx = 10
        if self.lefty >= 800:
            self.write_jpg()
    #另起一行畫序列單元
    def move_right(self):
        self.leftx = self.leftx+self.len

cdraw = draw_sequences("", filemd5, 0)
txtread = open(filename,"r")
for line in txtread:
	sub_seqs = i.split('&')
	sub_seqs.pop()
	idx = 0
	lseq = []
	for i in sub_seqs:
		if len(i) > 2:
                    subseqs = re.findall(r'.{2}', i)
                    for j in subseqs:
                        lseq.append(j)
                        if (idx+1)%3 == 0:
                            cdraw.draw_sequence(lseq)
                            lseq = []
                        idx = idx+1
                else:
                    lseq.append(i)
                    if (idx+1)%3 == 0:
                        cdraw.draw_sequence(lseq)
                        lseq = []
                    idx = idx+1

            listlen = len(lseq)
            if (listlen):
                if listlen < 3:
                    for i in range(listlen,3):
                        lseq.append('00')
                cdraw.draw_sequence(lseq)
            cdraw.move_right()
cdraw.write_jpg()
del cdraw
 

這裡是一行數值作一張圖，&符號分割後的數字兩位兩位劃分，不夠的用0補，每6位數字作一個方塊