Good Day. I have a csv file with weather stations and precipitation amounts by month. I want my code to ask which months the user would like to plot, open the csv file, add the precip data, and then plot the appropriate data on a map using ArcGIS 10.1 and python 2.7. The code I have so far is listed below.
The problem I have is that I am getting an error in the MakeXYEventLayer. I will quote it below:
Traceback (most recent call last):
File "\home\rex.morgan\Desktop\Temp\test9-3.py", line 151, in <module> arcpy.MakeXYEventLayer_management(Rex, "Long", "Lat", Var_layer, spRef, "")
File "C:\Program Files (x86)\ArcGIS\Desktop10.1\arcpy\arcpy\management.py" line 6322, in MakeXYEventLayer raise e
acrgisscripting.ExecuteError: Failed to execute. Parameters are not valid.
ERROR 000728: Field Long does not exist within table
ERROR 000728: Field Lat does not exist within table
Failed to execute (MakeXYEventlayer).
Any ideas would be greatly appreciated.
Code:
# ------------------------------------------------------------------------------------
# GISClimateMapping.py
# Modified and Updated by Rex Morgan; Original Max Min Precip Snow .py by Josh Barnwell
# Description: Creates GIS maps for Temperatures, and Rain and Snow Amounts.
# ------------------------------------------------------------------------------------
# A Work in progress code 2-17-2013 1020 AM
# Removed print statements
# User Input of Month, Day, and what Variable to be plotted
# Not sure why the test9-1.py failed. I originally believed that to be due to the
# non capitalization of the Lat and Long variable but that seems to not be the
# case, as I have capitalized the variable.
import time
import csv
import array
from time import gmtime, strftime
print strftime("%Y-%m-%d %H:%M:%S", gmtime())
print ' '
print ' ARCGIS Climate Data Mapping Program'
print ' '
fname = 'Z:\\Desktop\\COOP_rainfall2.csv'
# read the data file
data_list = []
for line in open(fname):
# remove trailing newline char
line = line.rstrip()
# create a list
line_list = line.split(',')
data_list.append(line_list)
# create a months dictionary with month:index pairs
mdict = {}
for ix, item in enumerate(data_list[0]):
if ix > 8:
mdict[item] = ix
#Gathering input from user
month1=raw_input('Input the 3 letter ID of beginning month ')#getting input data from user
month2=raw_input('Input the 3 letter ID of ending month ')#getting input data from user
#assigning beginning and ending month here
month_start = month1
month_end = month2
#Create a new list
new_list = []
outgroup = file("Z:\\Desktop\\test.csv", 'w') #this file is initially in the wrong format.
for item in data_list[1:]:
station = item[0]
lat = item[2] #Remembe to change this value if altering the structure of the input file Z:\\Desktop\\COOP_rainfall2.csv
long = item[3]
start = mdict[month_start]
end = mdict[month_end]+1
plist = [float(x) for x in item[start : end] if x] #having trouble with blanks
if plist:
mysum = sum(plist)
new_list.append([station, lat, long, mysum])
for item in new_list:
outgroup.write(str(item)) #this does produce a file with the info contained therein but not quite what I want
#new_file.write("%s\n" % item)
f= open("Z:\\Desktop\\test2.csv", 'w') # This file needs to be different than the one in line 35 of code.
for row in new_list:
f.write(','.join(map(str,row))+'\n')
new_list.insert(0,['Station', 'Lat', 'Long', 'mysum']) # this ran without errors and did add the values to the beginning of list
## this line added at 2-17-2013 933 AM
f= open("Z:\\Desktop\\test3.csv", 'w')
for row in new_list:
f.write(','.join(map(str,row))+'\n')
print ' This is the end of the test6.py file. Now for the rest of it. '
Rex = 'Z:\\Desktop\\test3.csv'
### Hack this part back in
Precip=[] #creating an array named Precip
inp = open (Rex,"r") # Rex defined in line 22 of code
for line in inp.readlines():
line.split(',')
Precip.append(line)
file.close(inp)
##### The part above hacked back in
print ' '
print 'This will take about 2 to 5 minutes...'
month = month1 + ' through ' + month2
months = month
usermonth = "[" + months + "]"
# Import arcpy module
import arcpy
import arcpy.mapping
# Check out any necessary licenses
arcpy.CheckOutExtension("spatial")
import sys, string, os
# Directories
tempdir = 'CSV\\'
directory = 'N:\\climate\\ClimateSheets\\' + str(tempdir)
TopoToR = 'R:\\ArcGIS\\default.gdb\\TopoToR'
# Local variables:
GGW_Counties = "R:\\fxc\\Western Region FXC Packet\\GGW.shp"
Var_layer = months # variable assigned in line 40 of code
Var_shp = str(directory) + 'Var.shp'
Var_new = str(directory) + 'Varnew.shp'
Var_img = str(directory) + 'Var.img'
Var100_img = str(directory) + 'Var100.img'
Vari100 = str(directory) + 'Vari100'
Varcontour_shp = str(directory) + 'Varcontour.shp'
Output_stream_polyline_features = ""
Output_remaining_sink_point_features = ""
Output_diagnostic_file = ""
Output_parameter_file = ""
TopoToRasterExtent= "-108.891024 46.540403 -104.041596 49.000027"
spRef = r"Coordinate Systems\Geographic Coordinate Systems\World\WGS 1984.prj"
print 'Made it through Local variables'
import arcview
import sys, string, os, arcgisscripting
gp = arcgisscripting.create(10.1)
gp.SetProduct("ArcView") # or ArcEditor or ArcInfo
gp.overwriteoutput = 1
#arcpy.overwriteOutput = True
print 'Made it through import arcview'
### Getting error in the arcpy.MakeXYEventLayer_management ---- "Long" does not extist "Lat" does not exist
# Process: Make XY Event Layer
arcpy.MakeXYEventLayer_management(Rex, "Long", "Lat", Var_layer, spRef, "") #Rex is defined in line 90 of code as Z:\\Desktop\\test3.csv
print 'Make XY Event Layer Done'
# Process: Copy Features
arcpy.CopyFeatures_management(Var_layer, Var_shp, "", "0", "0", "0")
print 'Copy Features Done'
# Process: Topo to Raster
from arcpy import env
env.extent = "-108.891024 46.540403 -104.041596 49.000027"
from arcpy.sa import *
outTTR = TopoToRaster([TopoPointElevation([[Var_shp, Var_layer]])], "0.003", "", "20", "", "", "ENFORCE", "CONTOUR", "", "", "", "", "", "")
outTTR.save(TopoToR)
print 'Topo To Raster Done'
# Process: Clip
arcpy.Clip_management(TopoToR, "-108.891024 46.540403 -104.041596 49.000027", Var_img, GGW_Counties, "", "ClippingGeometry")
print 'Clip Done'
# Process: Define Projection for Shapefile in order to plot record values correctly
ggw_shp = 'R:\\fxc\\Western Region FXC Packet\\GGW.shp'
dsc = arcpy.Describe(ggw_shp)
coord_sys = dsc.SpatialReference
arcpy.DefineProjection_management(Var_shp, coord_sys)
print 'Define Projection Done'
print strftime("%Y-%m-%d %H:%M:%S", gmtime())
print 'Exporting Map'
from datetime import date
now = date.today().isoformat()
mxd1 = arcpy.mapping.MapDocument(r"R:\EventData\CoopPrecip1024.mxd")
mxd3 = arcpy.mapping.MapDocument(r"R:\EventData\CoopPrecip13.mxd")
#newtitle = arcpy.mapping.ListLayoutElements(mxd3, "TEXT_ELEMENT", "title")[0]
if 'YTD' in months: #months defined in line 20
print 'if statement'
newtitle = arcpy.mapping.ListLayoutElements(mxd1, "TEXT_ELEMENT", "title")[0]
for lyr in arcpy.mapping.ListLayers(mxd1):
if lyr.name == "Var":
if lyr.supports("LABELCLASSES"):
lblClass = lyr.labelClasses[0] #this is the Default label class.
lblClass.expression = usermonth
newtitle.text = 'Annual COOP Precipitation Year to Date'
arcpy.mapping.ExportToPNG(mxd1, r'R:\\Maps\\' + months + str(now) + '.png', resolution=100) #months defined in line 20
else:
print 'else statement'
newtitle = arcpy.mapping.ListLayoutElements(mxd3, "TEXT_ELEMENT", "title")[0]
for lyr in arcpy.mapping.ListLayers(mxd3):
if lyr.name == "Var":
if lyr.supports("LABELCLASSES"):
lblClass = lyr.labelClasses[0] #this is the Default label class.
lblClass.expression = usermonth
newtitle.text = 'Monthly COOP Precipitation for ' + month # month defined in line 40
arcpy.mapping.ExportToPNG(mxd3, r'R:\\Maps\\' + months + str(now) + '.png', resolution=100) #months defined in line 20
print 'Map is Complete and located in R:\Maps'
print strftime("%Y-%m-%d %H:%M:%S", gmtime())Quote:
Traceback (most recent call last):
File "\home\rex.morgan\Desktop\Temp\test9-3.py", line 151, in <module> arcpy.MakeXYEventLayer_management(Rex, "Long", "Lat", Var_layer, spRef, "")
File "C:\Program Files (x86)\ArcGIS\Desktop10.1\arcpy\arcpy\management.py" line 6322, in MakeXYEventLayer raise e
acrgisscripting.ExecuteError: Failed to execute. Parameters are not valid.
ERROR 000728: Field Long does not exist within table
ERROR 000728: Field Lat does not exist within table
Failed to execute (MakeXYEventlayer).
