i have written a program in tkinter to draw stock graph,there are two strange thing i can't understand
the attachment is 'AAU' data file(attachment 1).when you download it ,please save it in /tmp/AAU
there is a scrolled canvas in it ,
1.strang long line,please see my attachment.
i have see my data ,my formulation ,no wrong,but the line is so long!!
2.there is no motion event reaction in the right of canvas,only motion event reaction in the left of canvas.
3.i have round function ,but the output is still more fractions than 2.
#coding:utf-8
from Tkinter import *
import string
class hdraw(object):
def __init__(self,fname):
file='/tmp/'+fname
self.stock=fname
self.data=(open(file,'r').readlines())[1:-1]
self.data.reverse()
self.xsqueen=range(0,len(self.data)*2,2)
self.pairs=len(self.data)
#Open,High,Low,Close,Volume,Adj Close
self.date =[i.split(',')[0] for i in self.data]
self.open =[string.atof(i.split(',')[1]) for i in self.data]
self.high =[string.atof(i.split(',')[2]) for i in self.data]
self.low =[string.atof(i.split(',')[3]) for i in self.data]
self.close =[string.atof(i.split(',')[4]) for i in self.data]
self.vol =[string.atof(i.split(',')[5]) for i in self.data]
self.adjclose =[string.atof(i.split(',')[6]) for i in self.data]
self.ymax =max(self.open+self.high+self.low+self.close)
self.ymin =min(self.open+self.high+self.low+self.close)
self.width =self.pairs*4
times=self.ymax//self.ymin+1
if times < 5:
self.height=times*180
elif 5<= times <10:
self.height=times*100
elif 10 <= times <20:
self.height=times*80
else:
self.height=times*50
def getyposition(self,p):
yp=(50+self.height)-(p-self.ymin)*self.height/(self.ymax-self.ymin)
return yp
def getxposition(self,x):
xp=50+4*x
return xp
def myprint(self,event):
# convert the event coordinates to canvas coordinates
x = canv.canvasx(event.x)
y = canv.canvasy(event.y)
# find the poistion in the top right corner of your canvas widget
# less a little bit so as to see the displayed text
if x in self.xsqueen :
ith=self.xsqueen.index(x)
# delete previous displayed text
canv.delete('coords')
# display the coordinates
canv.create_text(x,y,anchor=E,text='%s,%f,%f,%f,%f' % (self.date[ith], \
round(self.open[ith],2),round(self.high[ith],2),round(self.low[ith],2) \
,round(self.close[ith],2)),tags='coords')
def drawcanvas(self):
global canv
print self.stock
root.title('the history curve of %s' % self.stock)
canv = Canvas(root, bg='white', relief=SUNKEN)
canv.config(width=self.width+180,height=self.height+100)
canv.config(scrollregion=(0,0,self.width+180,self.height+100))
canv.config(highlightthickness=0)
ybar = Scrollbar(root)
xbar=Scrollbar(root,orient='horizontal')
ybar.config(command=canv.yview)
xbar.config(command=canv.xview)
canv.config(yscrollcommand=ybar.set)
canv.config(xscrollcommand=xbar.set)
ybar.pack(side=RIGHT, fill=Y)
xbar.pack(side=BOTTOM,fill=X)
canv.pack(side=LEFT, expand=YES, fill=BOTH)
canv.create_text(20,20,text=self.stock)
# display the coordinates
canv.create_line(50,self.height+50,self.width+100,self.height+50,width=4)
canv.create_line(50,self.height+50,50,0,width=4)
canv.create_line(100+self.width,self.height+50,100+self.width,0,width=4)
canv.create_line(50,self.getyposition(self.ymax),self.width+100, \
self.getyposition(self.ymax),width=4)
#the last day line
yyp=self.getyposition(self.close[-1])
canv.create_line(50,yyp,100+self.width,yyp,width=2)
#right coordinates
canv.create_text(135+self.width,yyp,text=str(self.close[-1])+' '+'100%')
#left coordinates
canv.create_text(35,yyp,text=str(self.close[-1]))
#x coordinates
for i in range(0,self.pairs,20):
canv.create_text(50+2*i,self.height+50,text=(self.date[i]) \
.split('-')[1],anchor=N)
for i in range(0,self.pairs,120):
canv.create_text(50+2*i,self.height+65,text=(self.date[i]) \
.split('-')[0],anchor=N)
#draw data
p=self.close[-1]
c=100
while p*1.1<self.ymax:
c=c*1.1
p=p*1.1
yp=self.getyposition(p)
canv.create_text(135+self.width,yp,text=str(round(c))+'%')
canv.create_text(35,yp,text=str(round(p,2)))
canv.create_line(50,yp,100+self.width,yp)
p=self.close[-1]
c=100
while p*0.9>self.ymin and c*0.9>25:
c=c*0.9
p=p*0.9
yp=self.getyposition(p)
canv.create_text(135+self.width,yp,text=str(round(c))+'%')
canv.create_text(35,yp,text=str(round(p,2)))
canv.create_line(50,yp,100+self.width,yp)
#max price line
canv.create_text(35,self.getyposition(self.ymax),text=str(self.ymax))
#min price line
canv.create_text(35,self.getyposition(self.ymin),text=str(self.ymin))
canv.bind("<Motion>",self.myprint)
for i in range(0,self.pairs):
if self.close[i] >= self.open[i] :
colour='green'
else:
colour='red'
#draw k line
x1=self.getxposition(i)
y1=self.getyposition(self.open[i])
x2=x1
y2=self.getyposition(self.high[i])
x3=x1
y3=self.getyposition(self.low[i])
x4=x1
y4=self.getyposition(self.close[i])
canv.create_line(x2,y2,x3,y3,fill=colour)
canv.create_line(x1-2,y1,x1,y1,fill=colour)
canv.create_line(x1,y4,x1+2,y4,fill=colour)
root = Tk()
s=hdraw('AAU')
s.drawcanvas()
root.mainloop()
