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POScatter plot of 10k record extracted from database
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  1. POScatter plot of 10k record extracted from database
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    copied!<p>I am trying to make a scatter plot in Python. I supposed it will be fairly simple but got stuck with understanding in scatterplot (x and y value) while plotting.</p> <p>==<strong>My mission</strong> ==</p> <ul> <li>I have database and more then 10k record (all float) till now and will increase on daily basis.</li> <li>The record range is from 200-2000 (in float decimal).</li> <li>So, I want to see the most populated region in my dataset.</li> </ul> <p>==<strong>What I did?</strong>==</p> <pre><code>import numpy as np import pylab as pl import MySQLdb import sys import math conn = MySQLdb.connect( host="localhost", user="root", passwd="root", db="myproject") with conn: cur = conn.cursor() #will fetch all recoreds called monoiso field cur.execute("SELECT monoiso FROM pmass_selectedion") rows = cur.fetchall() for row in rows: #xvalue for monoiso variable and yvalue for range xvalue = row yvalue = [600] # tried this way too but got x and y dimension error #yvalue = [400,800,1200,1600] pl.plot(xvalue,yvalue,'ro') pl.show() </code></pre> <p><strong>Scatterplot Understanding</strong> (<a href="http://stattrek.com/ap-statistics-1/scatterplot.aspx" rel="nofollow noreferrer">link</a>)</p> <p><img src="https://i.stack.imgur.com/2T2qq.png" alt="enter image description here"></p> <p><strong>Ok! this plot doesnt make any sense.</strong></p> <p>==<strong>Question</strong> ==</p> <ul> <li>How to make scatter plot to see the most populated region?</li> <li>How can I assign y variable to make equal dimension with x variable(total number of fetched records)?</li> </ul> <p>New to plotting and statistic so please help me out</p>
 

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