How to create aux.xml file manually ?

[KumarAsanka]

How to create  aux.xml file manually ?

I made a program that download images from internet as tiles. Those tiles can be show as a mosaic in ArcMap 10 by using separate World files.

I want mosaic those with a coordinate system. How to create manually  aux.xml file to georeference a image ?

What are the contents of aux.xml file ? Is there any guides to understand aux.xml file ?

[DanPatterson_Retired]

can't they just be opened in a text editor or browser?

[KumarAsanka]

I want to create a new one. To make a new I have to understand it. Do you have ever seen kind of file. Please study following.

Row=1_Col=2.bmp.aux.xml

<PAMDataset>

  <Metadata domain="xml:ESRI" format="xml">

    <GeodataXform xsi:type="typens:PolynomialXform" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:typens="http://www.esri.com/schemas/ArcGIS/10.1">

      <PolynomialOrder>1</PolynomialOrder>

      <SpatialReference xsi:type="typens:UnknownCoordinateSystem">

        <XOrigin>376880.71000000002</XOrigin>

        <YOrigin>1043707.5700000001</YOrigin>

        <XYScale>175921860444.16037</XYScale>

        <XYTolerance>1.1368683772161579e-011</XYTolerance>

        <HighPrecision>true</HighPrecision>

      </SpatialReference>

      <CoeffX xsi:type="typens:ArrayOfDouble">

        <Double>241910.71272539312</Double>

        <Double>0.39084039268360349</Double>

        <Double>0</Double>

      </CoeffX>

      <CoeffY xsi:type="typens:ArrayOfDouble">

        <Double>654930.64823299879</Double>

        <Double>0</Double>

        <Double>0.39084039268360349</Double>

      </CoeffY>

      <InverseCoeffX xsi:type="typens:ArrayOfDouble">

        <Double>-618950.13221222197</Double>

        <Double>2.5585891804420759</Double>

        <Double>0</Double>

      </InverseCoeffX>

      <InverseCoeffY xsi:type="typens:ArrayOfDouble">

        <Double>-1675698.470508866</Double>

        <Double>0</Double>

        <Double>2.5585891804420759</Double>

      </InverseCoeffY>

      <Name />

    </GeodataXform>

  </Metadata>

</PAMDataset>

[AdrianWelsh]

Kumar,

Take a look at this:

XML Accessory File Format

It may give you the parameters you are looking for.

[KumarAsanka]

Its very helpful to me. Thanks

But in ArcGIs gives following tags.

<CoeffX xsi:type="typens:ArrayOfDouble">

<InverseCoeffX xsi:type="typens:ArrayOfDouble">

Original File ----->

Row=1_Col=2.bmp.aux.xml

<PAMDataset>

  <Metadata domain="xml:ESRI" format="xml">

    <GeodataXform xsi:type="typens:PolynomialXform" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:typens="http://www.esri.com/schemas/ArcGIS/10.1">

      <PolynomialOrder>1</PolynomialOrder>

      <SpatialReference xsi:type="typens:UnknownCoordinateSystem">

        <XOrigin>376880.71000000002</XOrigin>

        <YOrigin>1043707.5700000001</YOrigin>

        <XYScale>175921860444.16037</XYScale>

        <XYTolerance>1.1368683772161579e-011</XYTolerance>

        <HighPrecision>true</HighPrecision>

      </SpatialReference>

      <CoeffX xsi:type="typens:ArrayOfDouble">

        <Double>241910.71272539312</Double>

        <Double>0.39084039268360349</Double>

        <Double>0</Double>

      </CoeffX>

      <CoeffY xsi:type="typens:ArrayOfDouble">

        <Double>654930.64823299879</Double>

        <Double>0</Double>

        <Double>0.39084039268360349</Double>

      </CoeffY>

      <InverseCoeffX xsi:type="typens:ArrayOfDouble">

        <Double>-618950.13221222197</Double>

        <Double>2.5585891804420759</Double>

        <Double>0</Double>

      </InverseCoeffX>

      <InverseCoeffY xsi:type="typens:ArrayOfDouble">

        <Double>-1675698.470508866</Double>

        <Double>0</Double>

        <Double>2.5585891804420759</Double>

      </InverseCoeffY>

      <Name />

    </GeodataXform>

  </Metadata>

</PAMDataset>

[CodyBenkelman]

Kumar

If the tiles you're downloading have any georeferencing information (e.g. World files) you can easily create a virtual mosaic using a Mosaic Dataset.  Let us know what version of ArcGIS you are using.

One important note - if you are downloading base map tiles (e.g. from a source such as ArcGIS Online, Bing Maps, Google Maps etc.), please review the license agreement to be sure you are allowed to store a local copy of the files. 

[KumarAsanka]

I am Using ArcGis 10.2 and 9.2

I have 256x256 resolution tiles in pixel. Each tile has corner coordinates (in a excel file - not tagged) . But I created only world files for each basing meter and pixel method.

Ex:

Row=1_Col=1.bmpw

1

0

-0

-1

0

0

Row=1_Col=2.bmpw

1

0

-0

-1

256

0

etc..

I could not find a better formula to calculate of the world file's line 1 and 4 by using lat lng values. That's why I wanted to use aux.xml file instead world file. But in xml file some tags can't understand. (ex - <CoeffX xsi:type="typens:ArrayOfDouble"> <InverseCoeffX xsi:type="typens:ArrayOfDouble">)

So I want to know how to make aux.xml file by manually ...

Thanks lot