RE: [mapguide-users] Thematic Mapping
ot;;
aggregateOptions1.SetFilter(totquery1);
double increment1 = (5 > 1) ? 1.0 / (5 - 1) : 1.0;
MgDataReader dataReader1= featureService.SelectAggregate(resId,
layer.GetFeatureClassName(), aggregateOptions1);
while (dataReader1.ReadNext())
{
value = GetFeaturePropertyValue(dataReader1, "FeatId");
filterText = """ + "FeatId" + "" = ";
filterText = filterText + value;
areaRuleXML = String.Format(areaRuleTemplate,
"FeatId" + ":" + value,
filterText,
InterpolateColor(portion, "00", "00", 0), InterpolateColor(portion,
"00", "00", 0));
areaDoc = new XmlDocument();
areaDoc.LoadXml(areaRuleXML);
areaDoc.Save("C:\\theme.xml");
areaNode = doc.ImportNode(areaDoc.DocumentElement, true);
areaTypeStyle.AppendChild(areaNode);
portion = portion + increment;
}
dataReader1.Close();
// Now save our new layer definition to the session and add it to
the map.
String xmlString = doc.DocumentElement.OuterXml;
String uniqueName = this.MakeUniqueLayerName(map, "property layer",
"sample");
String legendLabel = layer.GetLegendLabel();
if ("sample".Length > 0)
legendLabel = legendLabel + " (" + "sample" + ")";
MgResourceIdentifier layerResId = new
MgResourceIdentifier("Session:" + sessionId + "//" + uniqueName +
".LayerDefinition");
resourceService.SetResource(layerResId, new MgByteReader(xmlString,
"text/xml"), null);
MgLayer newLayer = new MgLayer(layerResId, resourceService);
newLayer.SetName(uniqueName);
newLayer.SetLegendLabel(legendLabel);
newLayer.SetDisplayInLegend(layer.GetDisplayInLegend());
newLayer.SetVisible(true);
newLayer.SetSelectable(layer.GetSelectable());
layers.Insert(layers.IndexOf(layer), newLayer);
map.Save(resourceService);
return uniqueName;
}
now iam able to get different colour to the polygon (having Property as
FeatId=2984 ) other polygons were in different colour.
Now my problem is that this works fine for Filebased Package(Shapefile).When
i used this code for oracle based package i got an error at
aggregateoption.Setfilter option
the error was
"An exception of type 'OSGeo.MapGuide.MgFdoException' occurred in
MapGuideDotNetApi.DLL but was not handled in user code"
can u plz tell me so it will be helpful to me.
Thanks and Regards,
Padmini.
Chris Claydon wrote:
>
> Hi Padmini,
>
> The InterpolateColor() function in your code below has a method signature
> like this:
>
> private String InterpolateColor(double portion, String startColor, String
> endColor, int percentTransparent)
>
> You should set the startColor string to be the first color you want to use
> in your range of colors, and the endColor string to be the last color.
> Then, depending on the value of the "portion" parameter that you pass in,
> the resulting color will fall somewhere in the range you've specified.
>
> In the code you've included below, you have two calls to
> InterpolateColor(). One of them controls the fill color of your polygons
> and the other controls the edge color. The problem is that in each call,
> you've still specified that the startColor is the same as the endColor.
> For example:
>
> InterpolateColor(portion, "C2C3C4", "C2C3C4", 0) will only ever return you
> the color that corresponds to "C2C3C4". If you change one of the strings,
> you should see some color variation. E.g.
>
> InterpolateColor(portion, "00FF00", "FF", 0)
>
> Try that and see what happens.
>
> It seems to me that you do not yet have a very strong understanding of how
> the code below actually functions. I would urge you to spend some time
> looking at it to try to figure it out. I appreciate that some of it is
> quite complex, and you should feel free to ask questions on the newsgroup
> to help you. I can't claim to speak for anyone else on this group, but
> personally I would rather help others to learn to understand the
> framework, and write their own code, than simply to provide pre-written
> solutions to their problems.
>
> Chris.
>
> -Original Message-
> From: mapguide-users-boun...@lists.osgeo.org
> [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini
> godavarthi
> Sent: Sunday, February 01, 2009 9:22 PM
> To:
RE: [mapguide-users] Thematic Mapping
Hi Padmini,
The InterpolateColor() function in your code below has a method signature like
this:
private String InterpolateColor(double portion, String startColor, String
endColor, int percentTransparent)
You should set the startColor string to be the first color you want to use in
your range of colors, and the endColor string to be the last color. Then,
depending on the value of the "portion" parameter that you pass in, the
resulting color will fall somewhere in the range you've specified.
In the code you've included below, you have two calls to InterpolateColor().
One of them controls the fill color of your polygons and the other controls the
edge color. The problem is that in each call, you've still specified that the
startColor is the same as the endColor. For example:
InterpolateColor(portion, "C2C3C4", "C2C3C4", 0) will only ever return you the
color that corresponds to "C2C3C4". If you change one of the strings, you
should see some color variation. E.g.
InterpolateColor(portion, "00FF00", "FF", 0)
Try that and see what happens.
It seems to me that you do not yet have a very strong understanding of how the
code below actually functions. I would urge you to spend some time looking at
it to try to figure it out. I appreciate that some of it is quite complex, and
you should feel free to ask questions on the newsgroup to help you. I can't
claim to speak for anyone else on this group, but personally I would rather
help others to learn to understand the framework, and write their own code,
than simply to provide pre-written solutions to their problems.
Chris.
-Original Message-
From: mapguide-users-boun...@lists.osgeo.org
[mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini godavarthi
Sent: Sunday, February 01, 2009 9:22 PM
To: mapguide-users@lists.osgeo.org
Subject: Re: [mapguide-users] Thematic Mapping
Hi z,
Thanku very much for ur suggestions.i will respect it.
but i understood the answer given by Chris.
But i think its not correct solution for my original query.
i want to display different colors to the different polygons.
but while applying 2 colors in the InterpolateColor function it doesn't
change in different colors
while (dataReader.ReadNext())
{
value = GetFeaturePropertyValue(dataReader, "FeatId");
filterText = """ + "FeatId" + "" = ";
filterText = filterText + value;
areaRuleXML = String.Format(areaRuleTemplate,
"FeatId" + ":" + value,
filterText,
InterpolateColor(portion, "C2C3C4", "C2C3C4", 0), InterpolateColor(portion,
"00", "00", 0));
areaDoc = new XmlDocument();
areaDoc.LoadXml(areaRuleXML);
areaDoc.Save("C:\\theme.xml");
areaNode = doc.ImportNode(areaDoc.DocumentElement, true);
areaTypeStyle.AppendChild(areaNode);
portion = portion + increment;
}
it displays some yash color to all the polygons,but i want different color
to the different polygons
Can u plz help me
Thanks and Regards,
Padmini G.
zspitzer wrote:
>
> when someone takes times to provide a response, it's respectful to taking
> a bit more time to read your original email AGAIN !
>
> your calling
>
> InterpolateColor(portion, "C2C3C4", "C2C3C4", 0),
> InterpolateColor(portion,"C2C3C4", "C2C3C4", 0));
>
> which takes two colors to create a range, yet you pass in the same
> color twice
>
> sorry if I sound a bit grumpy, but it appears that Chris spent more
> time reading
> your email that you did after his reply
>
> z
>
>
>
> On Sat, Jan 31, 2009 at 7:57 PM, padmini godavarthi
> wrote:
>>
>> Hi,
>> Thanks for ur reply.but i didn't get u
>> can u plz tell me briefly so that it will be helpful to me.
>>
>>
>> Thanks and Regards,
>> Padmini.
>>
>>
>> Chris Claydon wrote:
>>>
>>> I would recommend modifying your call to InterpolateColor() so that the
>>> start color and end color correspond to the colors you want. They are
>>> currently both set to the same string.
>>>
>>> -Original Message-
>>> From: mapguide-users-boun...@lists.osgeo.org
>>> [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini
>>> godavarthi
>>> Sent: Friday, January 30, 2009 3:59 AM
>>> To: mapguide-users@lists.osgeo.org
>>> Subject: [mapguide-users] Thematic Mapping
>>>
>>>
>>&g
Re: [mapguide-users] Thematic Mapping
Hi z,
Thanku very much for ur suggestions.i will respect it.
but i understood the answer given by Chris.
But i think its not correct solution for my original query.
i want to display different colors to the different polygons.
but while applying 2 colors in the InterpolateColor function it doesn't
change in different colors
while (dataReader.ReadNext())
{
value = GetFeaturePropertyValue(dataReader, "FeatId");
filterText = """ + "FeatId" + "" = ";
filterText = filterText + value;
areaRuleXML = String.Format(areaRuleTemplate,
"FeatId" + ":" + value,
filterText,
InterpolateColor(portion, "C2C3C4", "C2C3C4", 0), InterpolateColor(portion,
"00", "00", 0));
areaDoc = new XmlDocument();
areaDoc.LoadXml(areaRuleXML);
areaDoc.Save("C:\\theme.xml");
areaNode = doc.ImportNode(areaDoc.DocumentElement, true);
areaTypeStyle.AppendChild(areaNode);
portion = portion + increment;
}
it displays some yash color to all the polygons,but i want different color
to the different polygons
Can u plz help me
Thanks and Regards,
Padmini G.
zspitzer wrote:
>
> when someone takes times to provide a response, it's respectful to taking
> a bit more time to read your original email AGAIN !
>
> your calling
>
> InterpolateColor(portion, "C2C3C4", "C2C3C4", 0),
> InterpolateColor(portion,"C2C3C4", "C2C3C4", 0));
>
> which takes two colors to create a range, yet you pass in the same
> color twice
>
> sorry if I sound a bit grumpy, but it appears that Chris spent more
> time reading
> your email that you did after his reply
>
> z
>
>
>
> On Sat, Jan 31, 2009 at 7:57 PM, padmini godavarthi
> wrote:
>>
>> Hi,
>> Thanks for ur reply.but i didn't get u
>> can u plz tell me briefly so that it will be helpful to me.
>>
>>
>> Thanks and Regards,
>> Padmini.
>>
>>
>> Chris Claydon wrote:
>>>
>>> I would recommend modifying your call to InterpolateColor() so that the
>>> start color and end color correspond to the colors you want. They are
>>> currently both set to the same string.
>>>
>>> -Original Message-
>>> From: mapguide-users-boun...@lists.osgeo.org
>>> [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini
>>> godavarthi
>>> Sent: Friday, January 30, 2009 3:59 AM
>>> To: mapguide-users@lists.osgeo.org
>>> Subject: [mapguide-users] Thematic Mapping
>>>
>>>
>>>
>>>
>>> Hi,
>>> iam using mpguide opensource 2.0 (.net 2.0 +IIS 5.1).
>>> I want to do thematic mapping for polygon layer(for example parcel
>>> layer)
>>> i tried to use the code in dotnetviewer sample.its working fine
>>>
>>> iam able to create a thematic layer with same color to the all polygons.
>>> Now my problem is that i want to apply different colours to the
>>> different
>>> polygons
>>>
>>> for example for parcel_id =1 green colour
>>> for example for parcel_id =2 Red colour and
>>> soon.
>>>
>>> for this can u plz tell me the code for how to do it?
>>>
>>>
>>> my code was as follows
>>> --
>>>
>>>
>>> NameValueCollection serverVars = Request.ServerVariables;
>>> String strServerVars = "";
>>> foreach (String str in serverVars.AllKeys)
>>> {
>>>
>>> strServerVars += "" + str;
>>>
>>> }
>>> String platform = serverVars["SERVER_SOFTWARE"];
>>> String queryStr = serverVars["QUERY_STRING"];
>>> string queryStr1 = serverVars["Form"];
>>> NameValueCollection requestParams = Request.HttpMethod == "POST"
>>> ?
>>> Request.Form : Request.QueryString;
>>> String sessionId = Request.QueryString["SESSION"];
>>> string realPath = Request.ServerVariables["APPL_PHYSICAL_PATH"];
>>> String configPath = realPath + "webconfig.ini";
>>> MapGuideApi.MgInitializeWebTier(configPath);
>>> MgUserInformation userInfo = new MgUserInformation(sessionId);
>>> MgSiteConnection siteConnection = new MgSiteConnection();
>>> siteConnection.Open(userInfo);
>>> MgResourceService resourceService =
>>> (MgResourceService)siteConnection.CreateService(MgServiceType.ResourceService);
>>> MgFeatureService featureService =
>>> (MgFeatureService)siteConnection.CreateService(MgServiceType.FeatureService);
>>>
>>> MgMap map = new MgMap();
>>> map.Open(resourceService, "mapdata");
>>> MgLayerCollection layers = map.GetLayers();
>>> MgLayer layer = (MgLayer)layers.GetItem("property layer");
>>>
>>> MgResourceIdentifier resId = new
>>> MgResourceIdentifier(layer.GetFeatureSourceId());
>>> MgResourceIdentifier layerDefResId = layer.GetLayerDe
Re: [mapguide-users] Thematic Mapping
when someone takes times to provide a response, it's respectful to taking
a bit more time to read your original email AGAIN !
your calling
InterpolateColor(portion, "C2C3C4", "C2C3C4", 0),
InterpolateColor(portion,"C2C3C4", "C2C3C4", 0));
which takes two colors to create a range, yet you pass in the same
color twice
sorry if I sound a bit grumpy, but it appears that Chris spent more
time reading
your email that you did after his reply
z
On Sat, Jan 31, 2009 at 7:57 PM, padmini godavarthi
wrote:
>
> Hi,
> Thanks for ur reply.but i didn't get u
> can u plz tell me briefly so that it will be helpful to me.
>
>
> Thanks and Regards,
> Padmini.
>
>
> Chris Claydon wrote:
>>
>> I would recommend modifying your call to InterpolateColor() so that the
>> start color and end color correspond to the colors you want. They are
>> currently both set to the same string.
>>
>> -Original Message-
>> From: mapguide-users-boun...@lists.osgeo.org
>> [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini
>> godavarthi
>> Sent: Friday, January 30, 2009 3:59 AM
>> To: mapguide-users@lists.osgeo.org
>> Subject: [mapguide-users] Thematic Mapping
>>
>>
>>
>>
>> Hi,
>> iam using mpguide opensource 2.0 (.net 2.0 +IIS 5.1).
>> I want to do thematic mapping for polygon layer(for example parcel layer)
>> i tried to use the code in dotnetviewer sample.its working fine
>>
>> iam able to create a thematic layer with same color to the all polygons.
>> Now my problem is that i want to apply different colours to the different
>> polygons
>>
>> for example for parcel_id =1 green colour
>> for example for parcel_id =2 Red colour and
>> soon.
>>
>> for this can u plz tell me the code for how to do it?
>>
>>
>> my code was as follows
>> --
>>
>>
>> NameValueCollection serverVars = Request.ServerVariables;
>> String strServerVars = "";
>> foreach (String str in serverVars.AllKeys)
>> {
>>
>> strServerVars += "" + str;
>>
>> }
>> String platform = serverVars["SERVER_SOFTWARE"];
>> String queryStr = serverVars["QUERY_STRING"];
>> string queryStr1 = serverVars["Form"];
>> NameValueCollection requestParams = Request.HttpMethod == "POST" ?
>> Request.Form : Request.QueryString;
>> String sessionId = Request.QueryString["SESSION"];
>> string realPath = Request.ServerVariables["APPL_PHYSICAL_PATH"];
>> String configPath = realPath + "webconfig.ini";
>> MapGuideApi.MgInitializeWebTier(configPath);
>> MgUserInformation userInfo = new MgUserInformation(sessionId);
>> MgSiteConnection siteConnection = new MgSiteConnection();
>> siteConnection.Open(userInfo);
>> MgResourceService resourceService =
>> (MgResourceService)siteConnection.CreateService(MgServiceType.ResourceService);
>> MgFeatureService featureService =
>> (MgFeatureService)siteConnection.CreateService(MgServiceType.FeatureService);
>>
>> MgMap map = new MgMap();
>> map.Open(resourceService, "mapdata");
>> MgLayerCollection layers = map.GetLayers();
>> MgLayer layer = (MgLayer)layers.GetItem("property layer");
>>
>> MgResourceIdentifier resId = new
>> MgResourceIdentifier(layer.GetFeatureSourceId());
>> MgResourceIdentifier layerDefResId = layer.GetLayerDefinition();
>> MgByteReader byteReader =
>> resourceService.GetResourceContent(layerDefResId);
>>
>> // Load the Layer Definition and Navigate to the specified
>>
>>
>> XmlDocument doc = new XmlDocument();
>> String xmlLayerDef = byteReader.ToString();
>> doc.LoadXml(xmlLayerDef);
>> XmlNodeList nodeList =
>> doc.GetElementsByTagName("VectorScaleRange");
>>
>> XmlElement vectorScaleRangecElement = (XmlElement)nodeList.Item(0);
>> XmlElement areaTypeStyle =
>> (XmlElement)vectorScaleRangecElement.GetElementsByTagName("AreaTypeStyle").Item(0);
>>
>> // Remove any existing elements.
>>
>> XmlNodeList areaRuleList =
>> areaTypeStyle.GetElementsByTagName("AreaRule");
>> int count = areaRuleList.Count;
>> for (int i = 0; i < count; i++)
>> {
>> //The areaRuleList shrinks as we remove items, so always
>> //remove the first item (don't use the index i)
>> areaTypeStyle.RemoveChild(areaRuleList.Item(0));
>> }
>>
>> // Now create the new elements.
>>
>> String areaRuleTemplate =
>> File.ReadAllText(GetThemeXmlTemplatePath());
>> MgFeatureAggregateOptions aggregateOptions = new
>> MgFeatureAggregateOptions();
>>
>> String value = null;
>> String filterText = null;
>> String areaRuleXML = null;
>> XmlDocument areaDoc = null;
>> XmlNode areaNode = null;
>> doub
RE: [mapguide-users] Thematic Mapping
Hi,
Thanks for ur reply.but i didn't get u
can u plz tell me briefly so that it will be helpful to me.
Thanks and Regards,
Padmini.
Chris Claydon wrote:
>
> I would recommend modifying your call to InterpolateColor() so that the
> start color and end color correspond to the colors you want. They are
> currently both set to the same string.
>
> -Original Message-
> From: mapguide-users-boun...@lists.osgeo.org
> [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini
> godavarthi
> Sent: Friday, January 30, 2009 3:59 AM
> To: mapguide-users@lists.osgeo.org
> Subject: [mapguide-users] Thematic Mapping
>
>
>
>
> Hi,
> iam using mpguide opensource 2.0 (.net 2.0 +IIS 5.1).
> I want to do thematic mapping for polygon layer(for example parcel layer)
> i tried to use the code in dotnetviewer sample.its working fine
>
> iam able to create a thematic layer with same color to the all polygons.
> Now my problem is that i want to apply different colours to the different
> polygons
>
> for example for parcel_id =1 green colour
> for example for parcel_id =2 Red colour and
> soon.
>
> for this can u plz tell me the code for how to do it?
>
>
> my code was as follows
> --
>
>
> NameValueCollection serverVars = Request.ServerVariables;
> String strServerVars = "";
> foreach (String str in serverVars.AllKeys)
> {
>
> strServerVars += "" + str;
>
> }
> String platform = serverVars["SERVER_SOFTWARE"];
> String queryStr = serverVars["QUERY_STRING"];
> string queryStr1 = serverVars["Form"];
> NameValueCollection requestParams = Request.HttpMethod == "POST" ?
> Request.Form : Request.QueryString;
> String sessionId = Request.QueryString["SESSION"];
> string realPath = Request.ServerVariables["APPL_PHYSICAL_PATH"];
> String configPath = realPath + "webconfig.ini";
> MapGuideApi.MgInitializeWebTier(configPath);
> MgUserInformation userInfo = new MgUserInformation(sessionId);
> MgSiteConnection siteConnection = new MgSiteConnection();
> siteConnection.Open(userInfo);
> MgResourceService resourceService =
> (MgResourceService)siteConnection.CreateService(MgServiceType.ResourceService);
> MgFeatureService featureService =
> (MgFeatureService)siteConnection.CreateService(MgServiceType.FeatureService);
>
> MgMap map = new MgMap();
> map.Open(resourceService, "mapdata");
> MgLayerCollection layers = map.GetLayers();
> MgLayer layer = (MgLayer)layers.GetItem("property layer");
>
> MgResourceIdentifier resId = new
> MgResourceIdentifier(layer.GetFeatureSourceId());
> MgResourceIdentifier layerDefResId = layer.GetLayerDefinition();
> MgByteReader byteReader =
> resourceService.GetResourceContent(layerDefResId);
>
> // Load the Layer Definition and Navigate to the specified
>
>
> XmlDocument doc = new XmlDocument();
> String xmlLayerDef = byteReader.ToString();
> doc.LoadXml(xmlLayerDef);
> XmlNodeList nodeList =
> doc.GetElementsByTagName("VectorScaleRange");
>
> XmlElement vectorScaleRangecElement = (XmlElement)nodeList.Item(0);
> XmlElement areaTypeStyle =
> (XmlElement)vectorScaleRangecElement.GetElementsByTagName("AreaTypeStyle").Item(0);
>
> // Remove any existing elements.
>
> XmlNodeList areaRuleList =
> areaTypeStyle.GetElementsByTagName("AreaRule");
> int count = areaRuleList.Count;
> for (int i = 0; i < count; i++)
> {
> //The areaRuleList shrinks as we remove items, so always
> //remove the first item (don't use the index i)
> areaTypeStyle.RemoveChild(areaRuleList.Item(0));
> }
>
> // Now create the new elements.
>
> String areaRuleTemplate =
> File.ReadAllText(GetThemeXmlTemplatePath());
> MgFeatureAggregateOptions aggregateOptions = new
> MgFeatureAggregateOptions();
>
> String value = null;
> String filterText = null;
> String areaRuleXML = null;
> XmlDocument areaDoc = null;
> XmlNode areaNode = null;
> double portion = 0.0;
>
> aggregateOptions.AddFeatureProperty("FeatId");
> aggregateOptions.SelectDistinct(true);
> aggregateOptions.SetFilter(totquery);
> double increment = (5 > 1) ? 1.0 / (5 - 1) : 1.0;
> MgDataReader dataReader =
> featureService.SelectAggregate(resId,
> layer.GetFeatureClassName(), aggregateOptions);
> while (dataReader.ReadNext())
> {
> value = GetFeaturePropertyValue(dataReader, "FeatId");
>
> filterText = """ + "FeatId" + "" = ";
>
> filterT
RE: [mapguide-users] Thematic Mapping
I would recommend modifying your call to InterpolateColor() so that the start
color and end color correspond to the colors you want. They are currently both
set to the same string.
-Original Message-
From: mapguide-users-boun...@lists.osgeo.org
[mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini godavarthi
Sent: Friday, January 30, 2009 3:59 AM
To: mapguide-users@lists.osgeo.org
Subject: [mapguide-users] Thematic Mapping
Hi,
iam using mpguide opensource 2.0 (.net 2.0 +IIS 5.1).
I want to do thematic mapping for polygon layer(for example parcel layer)
i tried to use the code in dotnetviewer sample.its working fine
iam able to create a thematic layer with same color to the all polygons.
Now my problem is that i want to apply different colours to the different
polygons
for example for parcel_id =1 green colour
for example for parcel_id =2 Red colour and
soon.
for this can u plz tell me the code for how to do it?
my code was as follows
--
NameValueCollection serverVars = Request.ServerVariables;
String strServerVars = "";
foreach (String str in serverVars.AllKeys)
{
strServerVars += "" + str;
}
String platform = serverVars["SERVER_SOFTWARE"];
String queryStr = serverVars["QUERY_STRING"];
string queryStr1 = serverVars["Form"];
NameValueCollection requestParams = Request.HttpMethod == "POST" ?
Request.Form : Request.QueryString;
String sessionId = Request.QueryString["SESSION"];
string realPath = Request.ServerVariables["APPL_PHYSICAL_PATH"];
String configPath = realPath + "webconfig.ini";
MapGuideApi.MgInitializeWebTier(configPath);
MgUserInformation userInfo = new MgUserInformation(sessionId);
MgSiteConnection siteConnection = new MgSiteConnection();
siteConnection.Open(userInfo);
MgResourceService resourceService =
(MgResourceService)siteConnection.CreateService(MgServiceType.ResourceService);
MgFeatureService featureService =
(MgFeatureService)siteConnection.CreateService(MgServiceType.FeatureService);
MgMap map = new MgMap();
map.Open(resourceService, "mapdata");
MgLayerCollection layers = map.GetLayers();
MgLayer layer = (MgLayer)layers.GetItem("property layer");
MgResourceIdentifier resId = new
MgResourceIdentifier(layer.GetFeatureSourceId());
MgResourceIdentifier layerDefResId = layer.GetLayerDefinition();
MgByteReader byteReader =
resourceService.GetResourceContent(layerDefResId);
// Load the Layer Definition and Navigate to the specified
XmlDocument doc = new XmlDocument();
String xmlLayerDef = byteReader.ToString();
doc.LoadXml(xmlLayerDef);
XmlNodeList nodeList =
doc.GetElementsByTagName("VectorScaleRange");
XmlElement vectorScaleRangecElement = (XmlElement)nodeList.Item(0);
XmlElement areaTypeStyle =
(XmlElement)vectorScaleRangecElement.GetElementsByTagName("AreaTypeStyle").Item(0);
// Remove any existing elements.
XmlNodeList areaRuleList =
areaTypeStyle.GetElementsByTagName("AreaRule");
int count = areaRuleList.Count;
for (int i = 0; i < count; i++)
{
//The areaRuleList shrinks as we remove items, so always
//remove the first item (don't use the index i)
areaTypeStyle.RemoveChild(areaRuleList.Item(0));
}
// Now create the new elements.
String areaRuleTemplate =
File.ReadAllText(GetThemeXmlTemplatePath());
MgFeatureAggregateOptions aggregateOptions = new
MgFeatureAggregateOptions();
String value = null;
String filterText = null;
String areaRuleXML = null;
XmlDocument areaDoc = null;
XmlNode areaNode = null;
double portion = 0.0;
aggregateOptions.AddFeatureProperty("FeatId");
aggregateOptions.SelectDistinct(true);
aggregateOptions.SetFilter(totquery);
double increment = (5 > 1) ? 1.0 / (5 - 1) : 1.0;
MgDataReader dataReader = featureService.SelectAggregate(resId,
layer.GetFeatureClassName(), aggregateOptions);
while (dataReader.ReadNext())
{
value = GetFeaturePropertyValue(dataReader, "FeatId");
filterText = """ + "FeatId" + "" = ";
filterText = filterText + value;
areaRuleXML = String.Format(areaRuleTemplate,
"FeatId" + ":" + value,
filterText,
InterpolateColor(portion, "C2C3C4", "C2C3C4", 0), InterpolateColor(portion,
"C2C3C4", "C2C3C4", 0));
areaDoc = new XmlDocument();
areaDoc.LoadXml(areaRuleXML);
RE: [mapguide-users] Thematic Mapping
You already have the code. Please just dig a little deeper into it before posting questions. If you don't have the code, download the dotnetviewersample.zip file from http://mapguide.osgeo.org/download/releases/2.0.x-samples. Unzip the file. Look in the THEME folder. As Chris already said, look in the thememain.aspx and classes/theme.aspx files. Those files are all written in C#. From here you have everything you need but it will require a little work on your part to read, understand and disseminate the code and put it to use in your own application. Andy Morsell, P.E. Spatial Integrators, Inc. www.SpatialGIS.com -Original Message- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini godavarthi Sent: Saturday, January 10, 2009 12:24 AM To: mapguide-users@lists.osgeo.org Subject: RE: [mapguide-users] Thematic Mapping Hi, Thanks for u r reply. But i want the only codein c sharp for applying theme. Can u plz send me the code . Regards, Padmini. Chris Claydon wrote: > > Most of the interesting code for the Theme sample is in the files > thememain.aspx and classes/theme.aspx > > Thememain.aspx handles most of the UI > Theme.aspx contains the methods to retrieve required information from > MapGuide, and to generate the new themed layer. > > The key method is ApplyTheme() which retrieves an existing MapGuide layer > definition, removes the existing theme configuration, and replaces it with > the one defined by the user. It then adds this new layer definition to the > map so that it can be displayed. > > I would highly recommend consulting the MapGuide Web Tier API > documentation to help in understanding the code. > > Chris. > > -Original Message- > From: mapguide-users-boun...@lists.osgeo.org > [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini > godavarthi > Sent: Thursday, January 08, 2009 11:54 PM > To: mapguide-users@lists.osgeo.org > Subject: [mapguide-users] Thematic Mapping > > > > Hi, > iam using Mapguide opensource 2.0 (with .net 2.0 (C#) and IIS 5.1) > Now i want to do the thematic mapping based on parcel id programmetically. > i saw dotnetviewersample application (Theme)its working fine. > but i didn't get the flow of the concept > can any one plz tell me the procedure and explain the thematic concept in > dotnetviewer sample application so that it will be very helpful to me. > > > Thanks and Regards, > Padmini. > -- > View this message in context: > http://n2.nabble.com/Thematic-Mapping-tp2132051p2132051.html > Sent from the MapGuide Users mailing list archive at Nabble.com. > > ___ > mapguide-users mailing list > mapguide-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/mapguide-users > ___ > mapguide-users mailing list > mapguide-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/mapguide-users > > -- View this message in context: http://n2.nabble.com/Thematic-Mapping-tp2132051p2137063.html Sent from the MapGuide Users mailing list archive at Nabble.com. ___ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users ___ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users
RE: [mapguide-users] Thematic Mapping
Hi, Thanks for u r reply. But i want the only codein c sharp for applying theme. Can u plz send me the code . Regards, Padmini. Chris Claydon wrote: > > Most of the interesting code for the Theme sample is in the files > thememain.aspx and classes/theme.aspx > > Thememain.aspx handles most of the UI > Theme.aspx contains the methods to retrieve required information from > MapGuide, and to generate the new themed layer. > > The key method is ApplyTheme() which retrieves an existing MapGuide layer > definition, removes the existing theme configuration, and replaces it with > the one defined by the user. It then adds this new layer definition to the > map so that it can be displayed. > > I would highly recommend consulting the MapGuide Web Tier API > documentation to help in understanding the code. > > Chris. > > -Original Message- > From: mapguide-users-boun...@lists.osgeo.org > [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini > godavarthi > Sent: Thursday, January 08, 2009 11:54 PM > To: mapguide-users@lists.osgeo.org > Subject: [mapguide-users] Thematic Mapping > > > > Hi, > iam using Mapguide opensource 2.0 (with .net 2.0 (C#) and IIS 5.1) > Now i want to do the thematic mapping based on parcel id programmetically. > i saw dotnetviewersample application (Theme)its working fine. > but i didn't get the flow of the concept > can any one plz tell me the procedure and explain the thematic concept in > dotnetviewer sample application so that it will be very helpful to me. > > > Thanks and Regards, > Padmini. > -- > View this message in context: > http://n2.nabble.com/Thematic-Mapping-tp2132051p2132051.html > Sent from the MapGuide Users mailing list archive at Nabble.com. > > ___ > mapguide-users mailing list > mapguide-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/mapguide-users > ___ > mapguide-users mailing list > mapguide-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/mapguide-users > > -- View this message in context: http://n2.nabble.com/Thematic-Mapping-tp2132051p2137063.html Sent from the MapGuide Users mailing list archive at Nabble.com. ___ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users
RE: [mapguide-users] Thematic Mapping
Most of the interesting code for the Theme sample is in the files thememain.aspx and classes/theme.aspx Thememain.aspx handles most of the UI Theme.aspx contains the methods to retrieve required information from MapGuide, and to generate the new themed layer. The key method is ApplyTheme() which retrieves an existing MapGuide layer definition, removes the existing theme configuration, and replaces it with the one defined by the user. It then adds this new layer definition to the map so that it can be displayed. I would highly recommend consulting the MapGuide Web Tier API documentation to help in understanding the code. Chris. -Original Message- From: mapguide-users-boun...@lists.osgeo.org [mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of padmini godavarthi Sent: Thursday, January 08, 2009 11:54 PM To: mapguide-users@lists.osgeo.org Subject: [mapguide-users] Thematic Mapping Hi, iam using Mapguide opensource 2.0 (with .net 2.0 (C#) and IIS 5.1) Now i want to do the thematic mapping based on parcel id programmetically. i saw dotnetviewersample application (Theme)its working fine. but i didn't get the flow of the concept can any one plz tell me the procedure and explain the thematic concept in dotnetviewer sample application so that it will be very helpful to me. Thanks and Regards, Padmini. -- View this message in context: http://n2.nabble.com/Thematic-Mapping-tp2132051p2132051.html Sent from the MapGuide Users mailing list archive at Nabble.com. ___ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users ___ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users
