Difference between revisions of "Statistical Algorithms Importer: Python Project FAQ"

From Gcube Wiki
Jump to: navigation, search
(→‎Matplotlib)
Line 23: Line 23:
 
plt.savefig('image.png')
 
plt.savefig('image.png')
 
</source>
 
</source>
 +
 +
 +
== How to use the input file parameters ==
 +
:For example we consider Phonebook algorithm:
 +
[[Image:StatisticalAlgorithmsImporter_Phonebook0.png|thumb|center|750px|Phonebook, SAI]]
 +
 +
[[Image:StatisticalAlgorithmsImporter_Phonebook1.png|thumb|center|750px|Phonebook, SAI]]
 +
 +
[[Image:StatisticalAlgorithmsImporter_Phonebook2.png|thumb|center|750px|Phonebook, SAI]]
 +
 +
 +
:DataMiner show the Phonebook algorithm in this way:
 +
[[Image:StatisticalAlgorithmsImporter_Phonebook3.png|thumb|center|750px|Phonebook in DataMiner interface, SAI]]
 +
 +
 +
:Python script code in sample:
 +
<source lang='python'>
 +
#
 +
# author Giancarlo Panichi
 +
#
 +
# PhoneBook
 +
#
 +
import sys
 +
import string
 +
 +
true = 1
 +
false = 0
 +
 +
def print_numbers(numbers):
 +
    print "Telephone Numbers:"
 +
    for x in numbers.keys():
 +
        value="Name: "+x+" Number: "+numbers[x]
 +
        print value,
 +
       
 +
def lookup_number(numbers,name):
 +
    if numbers.has_key(name):
 +
        return "For "+name+" the number is "+numbers[name]
 +
    else:
 +
        return "For "+name+" was not found"
 +
 +
def load_numbers(numbers,filename):
 +
    with open(filename,"r") as f:
 +
        lines = f.readlines()
 +
        lines
 +
        for in_line in lines:           
 +
            [name,number] = string.split(in_line,",")
 +
            numbers[name] = number
 +
   
 +
def save_result(result,filename):
 +
    with open(filename,"w") as f:
 +
        f.write(result)
 +
       
 +
phonebookFile=sys.argv[1]
 +
name=sys.argv[2]
 +
phone_list = {}
 +
 +
load_numbers(phone_list,phonebookFile)
 +
print_numbers(phone_list)
 +
number=lookup_number(phone_list,name)
 +
print number
 +
save_result(number,"result.txt")
 +
 +
</source>
 +
 +
 +
 +
:phonebook.csv:
 +
<pre style="display:block;font-family:monospace;white-space:pre;margin:1em 0;">
 +
Giancarlo,0123456789
 +
Gianpaolo,9876541234
 +
Paolo,1231410414
 +
</pre>
 +
 +
 +
:phonebook result with Giancarlo:
 +
<pre style="display:block;font-family:monospace;white-space:pre;margin:1em 0;">
 +
For Giancarlo the number is 0123456789
 +
</pre>
 +
 +
 +
 +
:Phonebook code:
 +
[[File:Phonebook.zip|Phonebook.zip]]
 +
 +
  
 
[[Category:Statistical Algorithms Importer]]
 
[[Category:Statistical Algorithms Importer]]

Revision as of 17:21, 10 January 2018

F.A.Q. of Statistical Algorithms Importer (SAI), here are common mistakes we have found in Python Project.


Matplotlib

Matplotlib require the $DISPLAY environment variable which means a running X server. DataMiner service do not allow a running X server session. So your code must be modified: 

#
# author Giancarlo Panichi
#
# Write file image.png
# 
import matplotlib as mpl
mpl.use('Agg')
import matplotlib.pyplot as plt
import numpy as np
....
plt.imshow(image)
plt.savefig('image.png')


How to use the input file parameters

For example we consider Phonebook algorithm:
Phonebook, SAI
Phonebook, SAI
Phonebook, SAI


DataMiner show the Phonebook algorithm in this way:
Phonebook in DataMiner interface, SAI


Python script code in sample:
#
# author Giancarlo Panichi
#
# PhoneBook
# 
import sys
import string
 
true = 1
false = 0
 
def print_numbers(numbers):
    print "Telephone Numbers:"
    for x in numbers.keys():
        value="Name: "+x+" Number: "+numbers[x]
        print value,
 
def lookup_number(numbers,name):
    if numbers.has_key(name):
        return "For "+name+" the number is "+numbers[name]
    else:
        return "For "+name+" was not found"
 
def load_numbers(numbers,filename):
    with open(filename,"r") as f:
        lines = f.readlines()
        lines
        for in_line in lines:            
            [name,number] = string.split(in_line,",")
            numbers[name] = number
 
def save_result(result,filename):
    with open(filename,"w") as f:
        f.write(result)
 
phonebookFile=sys.argv[1] 
name=sys.argv[2]
phone_list = {}
 
load_numbers(phone_list,phonebookFile)
print_numbers(phone_list)
number=lookup_number(phone_list,name)
print number
save_result(number,"result.txt")


phonebook.csv:
Giancarlo,0123456789
Gianpaolo,9876541234
Paolo,1231410414


phonebook result with Giancarlo:
For Giancarlo the number is 0123456789


Phonebook code:

File:Phonebook.zip

Retrieved from "https://wiki.gcube-system.org/index.php?title=Statistical_Algorithms_Importer:_Python_Project_FAQ&oldid=30720"