Tag: ArcGIS 10

Getting to know your Raster Types Properties

Do you remember what a raster type is?  If not, perhaps a refresher on raster types is needed.

Did you ever wonder what exactly the (default) properties of your raster type are? If so, you can always view and even edit a default raster type, while Adding Rasters to you Mosaic Dataset.

Viewing and Editing your raster type properties
To view the raster type (while using the Add Rasters to Mosaic Dataset tool), click on the Raster Type Properties icon .

This will open up the Raster Type Properties window. The General tab gives an overview of what the raster type is, and the band information. Also the Product Type and Processing Template that are valid with this raster type will be displayed.  You can change the Product Type and Processing Template that will be used, by changing the selection within each of the dropdown boxes. The Product Type allows you to filter which products will be ingested into the mosaic dataset. The Processing Template will specify which Functions will be used when your data is added.

The Properties tab allows you to view the rendering, pan-sharpening, and ortho-rectification instructions while adding rasters. If you do not like the defaults, you can change them at this time.

Finally the Function tab shows you what the various Processing Templates which were in the Processing Template list (on the General tab).  Here you can see what functions each processing template will perform.

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Best practices for using layer definition queries while creating features

ArcGIS 10 introduced the concept of editing with feature templates, which define a new feature’s symbology and default attribute values, among other properties. Anytime I want to add a feature, I use the Create Features window, which displays a list of available feature templates and tools for creating new features.

Sometimes, though, I do not see the template I want to use in the Create Features window. This could be because there are no templates for the layer, but it could also be that the template exists but is being filtered out of the Create Features window. The underlying philosophy for determining whether ArcMap shows a feature template is that new features created with the template must be visible after creation. Therefore, templates are hidden whenever new features would immediately disappear and not be displayed on the map.

While a layer being turned off is one of the more obvious reasons why feature templates are not shown on the Create Features window, layer definition queries can be subtle causes. A definition query displays only the subset of features that match an attribute query defined on the Layer Properties dialog box; the remaining features are not drawn on the map or shown in the attributes table.

This post provides an overview of and best practices for the use of definition queries while creating features.

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Using a raster function that is not in the Image Analysis window

Did you want to use a raster function that is not in the Image Analysis window? Here is a work-around to add any raster function to your raster layer.

1)  In the Image Analysis window, highlight the raster that you want to create a function on.

2) In the Processing pane, choose any random function that is enabled (i.e. Clip)
A new function raster layer is created, with the Clip function.
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Making a large-scale 3D map: Part 3

By Kenneth Field, Esri Research Cartographer

Making a Large Scale 3D Map Part 3 thumbnail

1. Introduction

In part 1 and part 2 of this blog entry, you learned about some of the design considerations for creating a large-scale 3D map, prepared your 2D building data in ArcMap, used ArcScene to create 3D representations of your building data, and transferred your data to Google SketchUp to render your models and then brought your models back into ArcScene. In this final part, you will use the models to create a 3D isometric map and add a range of additional symbols to create a rich large-scale 3D landscape for your static map. Continue reading

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How to download rasters from an image service

Now that you have shared your downloadable image service, how does a client download rasters?  Below are the steps to download rasters:

  1. Add an image service into ArcMap.
  2. Make selection either by creating a query (Select By Attributes), or by using the selection tool (Select By Rectangle).

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Share your source rasters within an image service – Part 2

Can I allow the users to download more than 20 rasters?

The “Maximum number of items downloadable per request” parameter limits the number of rasters that a user can download for each request.  This means that a user can download 20 rasters (20 is the default value) at a time, and then they can make another request to download another 20.  Obviously this can become tedious if you have thousands of images.  If you do not mind users from downloading more than 20 rasters per request, then you can set the number to a higher value.

 

How do I set the maximum number per download to a higher number?

The number of rasters that can be downloaded per request on the server cannot exceed the maximum number that has been set on the source mosaic dataset (which is 20 by default).  Therefore you will first have to edit the properties on the mosaic dataset itself.  Then you can set the server limit.

  1. Right-click on the mosaic dataset, and click Properties
  2. Click on the Defaults tab
  3. Scroll to the bottom, and look for the Maximum Number of Items Downloadable per Request
  4. Edit the value in the “Maximum number of items downloadable per request” to the desired maximum value
  5. Click OK

Now the maximum number has been raised on the mosaic dataset itself.  You can now edit the maximum value within the image service, as described in part 1 of this blog.

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Changes to ArcGIS Desktop basemaps

The National Geographic basemap has now been added to the File > Add Data > Add Basemap dialog in ArcGIS Desktop 10. It has also been added into the list of basemaps that appears if you choose the File > Add Data From ArcGIS Online command in ArcGIS Desktop 9.3.1.

 

In the Add Basemap dialog, the Shaded Relief basemap entry has been removed in order to make space for the National Geographic basemap and keep the number of basemaps to 12. However, we have updated the Terrain basemap so that it includes the Shaded Relief service. So if you want to add shaded relief to your map, choose the Terrain basemap, and then in the Table Of Contents you can choose between the terrain service and the shaded relief service, whichever looks best for your map. The layer also includes reference overlays that you can turn on.

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ArcGIS – CityEngine Urban Planning videos

For your viewing pleasure: 4 videos to accompany the CityEngine: Philadelphia example we published a couple of weeks ago. The videos show the full ArcGIS – CityEngine round trip:

Note: you need to download the latest CityEngine Urban Planning Example for updated rules!

Have a good Xmas break and see you back in 2012!

Gert
Esri R&D Center Zürich

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ArcGIS for Local Government – The Road Ahead in 2012

As the year winds down, we wanted to take a minute to thank everyone for the participation and feedback this year. It’s been really exciting to see the user community embrace the maps and apps on the ArcGIS for Local Government resource center and provide feedback that will ultimately make these ArcGIS maps and apps better for everyone using them. The team really enjoys the ongoing dialog with our local government users and looks forward to working with each and every one of you in the near future.

In 2012, we’re excited to incorporate the functionality emerging in ArcGIS 10.1 and ArcGIS Online, along with what we learned in 2011 from you, into the ArcGIS for Local Government solution. And we’ve got some plans we’d like to share with you for 2012 that we hope will make your adoption and use of ArcGIS simpler and more successful.http://blogs.esri.com/esri/arcgis/wp-includes/js/tinymce/plugins/wordpress/img/trans.gif

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Update to Campus Maps and Apps

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