[GIS] How to convert dbf to raster the short way

convertdbfinterpolationraster

I have got a dbf file and I want make it to raster file but the short way,

Look at my long way,

First i add my dbf file
and i create tin
http://i1211.photobucket.com/albums/cc421/mtnkou/2.jpg
at the and my raster file (tin to raster)
http://i1211.photobucket.com/albums/cc421/mtnkou/3.jpg

How can I do dbf to raster with short way,

i don't want create tin file,

Just dbf to raster,

How can i do ?

Best Answer

Assuming your file contains XYZ cords of point features. General process to create raster from point features is: point features -> interpolation of the space between the points (depends on the typ of data you have, usually you do some trials to see what effects suits you most) -> raster.

Your procedure above (points -> TIN -> raster) is actually one of the simplest for of raster creation, as TIN is actual interpolation step.

If you want to have more control during the interpolation ArcGIS, QGIS or from command line with GDAL will offer you some other tools. QGIS mostly is the GUI for GDAL. I guess what is your main concern, is interpolation algorithm. TIN does use linear interpolation between points without any influence of the neighboring values (in my opinon most suitable for terrain), IDW on the other hand is influenced by other neighbors (which is good with statistics etc.).

Related Solutions

[GIS] How to Open a Table, Convert it to ShapeFile & projecting the data using the X and Y

You can try using the built-in Add XY Data tool.
GUID: {55425B75-2CE4-4909-B40A-CFE50FAD1896} (esriLocationUI.AddXYDataCommand)

Refer the following SE discussion on the same issue.

Open the XYZ data as a table, the same as opening any other table. Once you've done that, create a spatial reference for the data. After that, the attached code example should handle the rest.

Public Sub AddXYEventLayer()

On Error GoTo EH

Dim pDoc As IMxDocument
Dim pMap As IMap
Set pDoc = ThisDocument
Set pMap = pDoc.FocusMap

//Get the table named XYSample.txt
Dim pStTabCol As IStandaloneTableCollection
Dim pStandaloneTable As IStandaloneTable
Dim intCount As Integer
Dim pTable As ITable
Set pStTabCol = pMap

For intCount = 0 To pStTabCol.StandaloneTableCount - 1
Set pStandaloneTable = pStTabCol.StandaloneTable(intCount)
If pStandaloneTable.Name = "XYSample.txt" Then
Set pTable = pStandaloneTable.Table
Exit For
End If
Next

If pTable Is Nothing Then
  MsgBox "The table was not found"
  Exit Sub
End If

//Get the table name object
Dim pDataSet As IDataset
Dim pTableName As IName
Set pDataSet = pTable
Set pTableName = pDataSet.FullName

// Specify the X and Y fields
Dim pXYEvent2FieldsProperties As IXYEvent2FieldsProperties
Set pXYEvent2FieldsProperties = New XYEvent2FieldsProperties
With pXYEvent2FieldsProperties
  .XFieldName = "x"
  .YFieldName = "y"
  .ZFieldName = ""
End With

// Specify the projection
Dim pSpatialReferenceFactory As ISpatialReferenceFactory
Dim pProjectedCoordinateSystem As IProjectedCoordinateSystem
Set pSpatialReferenceFactory = New SpatialReferenceEnvironment
Set pProjectedCoordinateSystem = pSpatialReferenceFactory.CreateProjectedCoordinateSystem(esriSRProjCS_NAD1983UTM_11N)

// Create the XY name object and set it's properties
Dim pXYEventSourceName As IXYEventSourceName
Dim pXYName As IName
Dim pXYEventSource As IXYEventSource  

Set pXYEventSourceName = New XYEventSourceName

With pXYEventSourceName
  Set .EventProperties = pXYEvent2FieldsProperties
  Set .SpatialReference = pProjectedCoordinateSystem
  Set .EventTableName = pTableName
End With
Set pXYName = pXYEventSourceName
Set pXYEventSource = pXYName.Open

// Create a new Map Layer
Dim pFlayer As IFeatureLayer
Set pFlayer = New FeatureLayer
Set pFlayer.FeatureClass = pXYEventSource
pFlayer.Name = "Sample XY Event layer"

//Add the layer extension (this is done so that when you edit
//the layer's Source properties and click the Set Data Source
//button, the Add XY Events Dialog appears)

Dim pLayerExt As ILayerExtensions
Dim pRESPageExt As New XYDataSourcePageExtension
Set pLayerExt = pFlayer
pLayerExt.AddExtension pRESPageExt

pMap.AddLayer pFlayer
pDoc.ActivatedView.PartialRefresh esriViewGeography, Nothing, Nothing

Exit Sub
EH:

MsgBox Err.Number & "  " & Err.Description

End Sub

To convertto shapefile, refer this URL

CHEERS!

[GIS] How to access row from DBF table

You are approching this wrong. By doing row.field_names[1] you are asking python to give you the field_names method on the row object which there isn't one.

Try this:

field = arcpy.ListFields("tabulka.gdb\zrazkove_uhrny")[1]
name = field.name
for row in rows:
    print row.getValue(name)

I think you might even be able to do row.getValue(1) but I'm not sure as I don't have arcpy on hand. Any Arcpy experts want to confirm or deny that?

Best Answer

Related Solutions

[GIS] How to Open a Table, Convert it to ShapeFile & projecting the data using the X and Y

[GIS] How to access row from DBF table

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