Latest Contributions by FilipKrál

Hello Kelly Hutchins‌ and anyone who made this work, I have a similar problem. I'm trying to Geocoder widget to search for places in the United Kingdom but the suggestions include results from other countries. This is how I configured the Geocoder widget:             // create geocoder widget             var geocoder = new Geocoder({               map: map,               autoComplete: true,               esriGeocoder: {                 name: "Esri World Geocoder",                 placeholder: "Search places...",                 searchExtent: new geometry.Extent(-10.0, 50.0, 5.0, 62.0, { "wkid": 4326 }),                 sourceCountry: "GBR"               }             }, node.attr('id'));             geocoder.startup(); And this is what I see in the map: I tried searchExtent: map.extent too but it made no difference. I tried adding suffix: ", United Kingdom" but it had no effect either. Any advice will be much appreciated. Filip. ... View more

Hi Cameron, We had a situation when services turned off and didn't restart (even though all relevant settings seemed fine). To get a warning that something was wrong, we set up a cron job (i.e. scheduled task) on one of our linux machines. Every hour, the job runs a python script which pokes the services and see if they are running. The python script requires a list of expected services of course. If any services don't respond, the script sends an email with the list of services that did not respond to our ArcGIS Server admin who can investigate further. I believe there are more elegant solutions but this is how we dealt with it at least for now. Filip. ... View more

Hi, you should be able to do create simple line features from multi-line features using the Dissolve tool. provided that the vertices are close enough (tweak cluster tolerance environment setting if necessary). Select the object ID field to dissolve by and tick the dissolve lines box. Regards, Filip. ... View more

Hi John, I am glad you made it work. To insert syntax highlighted code into this forum you have to use the advanced editor when you are editing the message. The advanced editor is available only if you are writing answer on the page dedicated to the thread (in this case that is https://community.esri.com/thread/119510‌‌ . After you click "Reply" or "Reply to original post", click "Use advanced editor" in the top right corner of the simple editor. In the advanced editor, paste in your code, select it and click on the insert button (looks like this: ">>"), then click "Syntax Highlighting" and choose the appropriate language. You may need to delete some extra empty rows once the code is highlighted. So... yes, it is a pretty convoluted process. Perhaps it will be more straightforward in some future versions of GeoNet. I am sure there is a thread dedicated to this topic. Filip. ... View more

I am not aware of any ArcGIS Geoprocessing tool that does that but if you know little bit of Python, the following answer should help: How do I download a file over HTTP using Python? - Stack Overflow‌ In any case, try to be gentle with automated download so you don't take the service down or deny the service to other people by accident. If the information you need is already in the RSS feed, writing a new shapefile based on the RSS feed might be a more elegant option. ... View more

Hi, it does indeed suggest that the problem may be in the sql statement. Maybe you can print(sql) before arcpy.analysis.Select to see if it is correct. Try to paste some of the print outs here so we can try to spot some problems. Filip. ... View more

Hi John, It seems to me that whatever you are trying to achieve with this, there might be an easier way. If you give it one more round of thought and still want to get on with what you described, perhaps the code below can help. I didn't test it because I had no sample data so it may contain some typos or glitches. If you understand the code though, you should be able get the job done. Hope this helps. Filip. # Given that species number is unique for each row in the table: import arcpy # parameters in_table = r'c:\full\path\to\table' in_fc = r'c:\full\path\to\polygon_fc' out_folder = r'c:\full\path\to\output\folder' polygon_code_field = "Code" # list all fields from the table all_fields = [f.name for f in arcpy.ListFields(in_table)] # loop through all rows in table with arcpy.da.SearchCursor(in_table, '*') as sc:     for row in sc:         item = dict(zip(all_fields, row)) # represent row as a dictionary         species_number = item.get('SpeciesNum', 0)         species_name = item.get('Sci_Name', 'Uknown')         # get list of polygon codes that should be selected         polygons_to_select = []         for field_name, value in item.iteritems():             field_name_lower = field_name.lower() # to make comparison case insensitive             if field_name_lower.startswith('sum_') and value == 1:                 polygon_code = field_name_lower.replace('sum_', '')                 polygons_to_select.append(polygon_code)         if polygons_to_select:             # create a string like "'A1','B2',..."             codes = ",".join(["'" + str(pg) + "'" for pg in polygons_to_select])             # build an SQL expression             sql = '"%s" IN (%s)' % (polygon_code_field, codes)             # export as a new shapefile with species_name in the file name             out_fc = os.path.join(out_folder, "spp_" + species_name)             out_fc = arcpy.analysis.Select(in_fc, out_fc, sql).getOutput(0)             # add the column with species number as string             arcpy.management.AddField(out_fc, "SpeciesNum", "TEXT")             arcpy.management.CalculateField(out_fc, "SpeciesNum", "'" + str(species_number) + "'")             # It seems to me it would be better to use species number in file name             # and to add column with species name though.         else:             # no Sum_* column contains 1 for this species, skip this species             pass             # or you may want to create an empty shapefile ... View more

Did you try geoprocessing tools like "Spatial Join" or "Intersect" from the Analysis tool box? ... View more

Hi Larry, Thanks for the tip about urllib2. It is true that working with urllib2 is a bit awkward but exactly this awkwardness is removed if you use my arrest.py. More serious  issues I've had with urllib2 were related to requesting data from https with self signed certificate. I would prefer the requests package but I didn't want to add a dependency on an external package. Is requests part of core Python in 3.x? I also looked at the script to collect stats of all services you referred to and translated it into a function below. I could not test it because I don't have admin credentials to any server I can reach at the moment. Can you check if it works? Filip. """Queries the logs and writes statistics on map service activity. Modified version of script available on ArcGIS Help: http://resources.arcgis.com/en/help/main/10.2/index.html#/Example_Derive_map_service_statistics_from_the_ArcGIS_Server_logs/0154000005vw000000/ To try this example, follow these steps: 1) Publish several map services (without defining tile caches for them). 2) Set the ArcGIS Server log level to FINE. 3) Make some draw requests of your services by adding them to ArcMap etc. 4) Run this script and examine the resulting text file. """ import httplib, urllib, json import sys, time def collect_services_statistics(server_name, output_file, username, password, hours=24, port=6080):     """Query ArcGIS Server logs and write a summary of all map service draws.     server_name -- e.g.     output_file -- path of the text file where the statistics should be written     username, password -- credentials for the server admin rest interface     hours=24 -- result will include summary for this number of the last hours     port=6080 -- arcgis server port number     """         def assertJsonSuccess(data):         """Check that the input JSON object is not an error object."""         obj = json.loads(data)         if 'status' in obj and obj['status'] == "error":             print "Error: JSON object returns an error. " + str(obj)             return False         else:             return True         def getToken(username, password, server_name, port):         """Generate a token given username, password and the adminURL."""         # Token URL is typically http://server[:port]/arcgis/admin/generateToken         tokenURL = "/arcgis/admin/generateToken"         # URL-encode the token parameters         params = urllib.urlencode({'username': username, 'password': password, 'client': 'requestip', 'f': 'json'})         headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "text/plain"}                 # Connect to URL and post parameters         httpConn = httplib.HTTPConnection(server_name, port)         httpConn.request("POST", tokenURL, params, headers)                 # Read response         response = httpConn.getresponse()         if (response.status != 200):             httpConn.close()             raise Exception("Unable to fetch token, check the URL and try again.")         else:             data = response.read()             httpConn.close()                         # Check that data returned is not an error object             if not assertJsonSuccess(data):                            return                         # Extract the toke from it             token = json.loads(data)                   return token['token']             millisecondsToQuery = hours * 60 * 60 * 100 # 86400000 is 1 day     hitDict = {}         # Get a token     token = getToken(username, password, server_name, port)     if token == "":         raise Exception("Could not generate a token using the credentials.")         # Construct URL to query the logs     logQueryURL = "/arcgis/admin/logs/query" # is this going to work in future?     startTime = int(round(time.time() * 1000))     endTime = startTime - millisecondsToQuery     logFilter = "{'services':'*','server':'*','machines':'*'}"         params = urllib.urlencode({         'level': 'FINE',         'startTime': startTime,         'endTime': endTime,         'filter':logFilter,         'token': token,         'f': 'json'     })         headers = {         "Content-type": "application/x-www-form-urlencoded",         "Accept": "text/plain"     }         # Connect to URL and post parameters        httpConn = httplib.HTTPConnection(server_name, port)     httpConn.request("POST", logQueryURL, params, headers)         # Read response     response = httpConn.getresponse()     if (response.status != 200):         httpConn.close()         raise Exception("Error while querying logs.")     else:         data = response.read()         # Check that data returned is not an error object         if not assertJsonSuccess(data):                      raise Exception("Error returned by operation. " + data)                 # Deserialize response into Python object         dataObj = json.loads(data)         httpConn.close()         # Need these to calculate average draw time for an ExportMapImage call         mapDraws = 0         totalDrawTime = 0                 # Iterate over messages                for item in dataObj["logMessages"]:                        if item["message"] == "End ExportMapImage":                 elapsed = float(item["elapsed"])                 keyCheck = item["source"]                 if keyCheck in hitDict:                     stats = hitDict[keyCheck]                     stats[0] += 1 # Add 1 to tally of hits                     stats[1] += elapsed # Add elapsed time to total elapsed time                 else:                     # Add key with one hit and total elapsed time                     hitDict[keyCheck] = [1, elapsed]         # Open text file and write header line               with open(output_file, "w") as summaryFile:             header = "Service,Number of hits,Average seconds per draw\n"             summaryFile.write(header)             # Read through dictionary and write totals into file             for key in hitDict:                 # Calculate average elapsed time                 totalDraws = hitDict[key][0]                 totalElapsed = hitDict[key][1]                 avgElapsed = 0                 if totalDraws > 0:                     #Elapsed time divided by hits                     avgElapsed = (1.0 * (totalElapsed / totalDraws))                 # Construct and write the comma-separated line                   line = key + "," + str(totalDraws) + "," + str(avgElapsed) + "\n"                 summaryFile.write(line)                 return summaryFile     if __name__ == "__main__":     server_name = 'http://sampleserver5.arcgisonline.com'     output_file = 'c:/temp/summary.csv'     username, password = "that_is_what", "i_do_not_know"     collect_services_statistics(server_name, output_file, username, password, hours=24, port=6080) ... 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Thank you both ever so much! The problem in the example I posted was indeed in the spatial reference definition. In fact, my original problem was that I created a new graphics layer and added my graphics into it. But I forgot to add this new graphics layer to the map! So I explored more and more with no success and ended up completely lost. Many thanks again! Filip. ... View more

Hi larry zhang‌, you seem to be able to use the code you referred to but I couldn't make it work. What version of ArcGIS Server did you use? I thought the /arcgis/admin end point has been changed. Anyhow, I suppose general users don't have credentials for it anyway. I tried to experiment with the following 10.2.x servers. http://sampleserver5.arcgisonline.com/arcgis/rest/ (I have no credentials to this one but I couldn't even find the end points) https://datahub.esriuk.com/arcgis/rest/ (I managed to generate token from https://datahub.esriuk.com/arcgis/tokens/generateToken‌ but I cannot see any admin interface. Here is the function I tried to get token with. Hopefully I'll figure out some way of using it to access secured services with arcapi/arrest.py. import urllib2 import urllib import json from contextlib import closing def generateToken(url, username, password):     params = urllib.urlencode({'username': username, 'password': password, 'client': 'requestip', 'f': 'json'})     headers = {"Content-type": "application/x-www-form-urlencoded", "Accept": "text/plain"}     req = urllib2.Request(url, params, headers)     with closing(urllib2.urlopen(req)) as res:         dta = res.read()     jsn = json.loads(dta)     return jsn.get('token')        username,password = '***', '***' url = "https://datahub.esriuk.com/arcgis/tokens/generateToken" token = generateToken(url, username, password) Regards, Filip. ... View more

Oh, thanks for the tip, Larry. The element of authentication makes it slightly more complex but I'll consider it if I can make a nice simple function out of it. F. ... View more