Map Edition

From Wikiagro.com
Jump to: navigation, search

{{#customtitle:Map Edition: Edition Panel|Map Edition: Edition Panel}}

This exercise is included in the tutorial: Using GeoAgro GIS
The Edition Module offers a variety of tools that will allow you to create, modify, and manage layers of data and the objects they contain; import and export files from and to GeoAgro GIS; and work with backup files. It also allows users to set the appearance of data on a map and apply color codes to identify performance and variability patterns. This step-by-step tutorial will help you learn how to use these tools. For these exercises you will use data that has been pre-set to this end.

Exercises

Where to Do the Exercises


The first step to complete the exercises in this tutorial is to set up the computer you will be working on. You may either:

  • Work on your own computer: If you completed our Getting Started Course, your system and datasets are ready to go through this learning guide. You will be able to use our GeoAgro GIS trial version for 2 months. From now on, you are ready to begin with any learning guide you wish.
  • Work on a virtual computer provided by GeoAgro: This does not require any previous installation. See Prepare a GGS Tutorial on a virtual computer


The following instructions apply to either method, unless otherwise specified.

Exercise 01 – Adding and Deleting Data

Adding an Image Layer

For this exercise you will first add an image layer to the project. Download from the following link http://www.tekconsultants.net/files/Support/Tutorial/GGS/NAIP_Ortho_IA_2008.zip a NAIP 2008 image in tiff format taken on August 25, 2008. Please unzip it and remember it's location.

Next, click on the Add New Layer tool Image:GIS_gis_Edit_01_01.jpg in the GeoAgro Gis module.

A dialog box will open. Check the radio button next to Image Layer. Press Next.

Image:GIS_gis_Edit_01b_01.jpg


Complete the Layer Creation Wizard as shown below. Next, browse your computer for the file that you have downloaded and select it. Click on Finish.

Layer Creation Wizard

The newly-added layer will appear under the 'Base Map' layer group.

Related articles

Adding a WMS Layer

In this exercise you will add a WMS layer to the project. Click on the Add New Layer tool Image:GIS_gis_Edit_01_01.jpg in the GeoAgro Gis module.

Image:GIS_gis_Edit_01d_01.jpg

A dialog box will open. Click on the radio button next to WMS (Web Map Server) Layer. Press Next.

Complete the Layer Creation Wizard as shown below. Use 'USDA NAIP Imagery' as the layer name and 'Base Map' as the layer group.

Create WMS Layer

Copy and paste: “http://terra.nrcs.usda.gov:8081/TerraServer/MapServices1.2/OGCNav.ashx?” in the URL box. Then click Next.

A dialog box will open. Select 'OrthoNav' from the list.
Create WMS Layer

Then click on Accept.
The newly-added WMS layer will appear under the 'Base Map' layer group.
Create WMS Layer - Click here to see a larger view

Double-click on the 'Tracts' layer. A ‘please wait’ message will pop up while the image is being downloaded.

Related Articles

Saving a WMS Layer

Double-click on the 'Tracts' layer in order to zoom to that level.
Then please zoom out a bit by clicking and dragging upwards using the Zoom In/Zoom Out Zoom out.

Zoom out - Click here to see a larger view

A message will pop up asking you to wait until the image is downloaded.

Select the WMS layer to make it active, and click on the Save Current WMS Image tool Save Current WMS Image tool.

Type in a name, such as 'WMS Image'. Click on Accept.

WMS Image

The layer will appear at the Reference Panel, under the designated group.

Related articles

Delete Layers

Select the layer you have just created: 'WMS Image' (under the Base Map group in the Reference Panel.)

WMS Image Layer

Go to the Edition Panel and click on the Delete Selected Layer tool Delete layer.


You will be asked to confirm whether you wish to permanently delete the layer. Click on Yes.

Delete Layer confirmation

Related Articles


Exercise 02 – Data Visualization

Modifying Layer Properties

In this exercise you will edit the appearance of a layer. Select the 'Soils' layer to make it active and go to the Edition Panel and click on Edit Cartography and Layer Properties tool Edit Cartography.

A dialog box will open. Change the name of the layer by inserting the word “Map” at the end of its current name.

Change Layer Name

Click on Accept.

The new name will be updated in the Reference Panel.

Soils layer


Go back to the 'Soils Map' layer. Click on the Edit Cartography and Layer Properties tool Edit Cartography in the Edition Panel.

Select the Symbology tab and click on the arrow for the Contents drop-down menu and select 'Classes'. Then select the MUSYM attribute as Identifier.

Layer Properties - Symbology

This will create a class for every unique value found on the MUSYM attribute.

Please select the designatd color for the 'Initial value' and keep the default for the 'Final value'

Layer Properties - Color


Finally click on Accept.

Layer Properties, resulting map - Click here to see a larger view

The Map will look like the image above and the Reference Panel holds a description for each class.

Related Articles

Assigning Labels

Go back to Edit cartography and layer properties window for the same layer (Soils Map). Click on the Symbology tab. Go to the Label tab. Complete the form as shown below.


Labels Tab


Click on the arrow for the Attribute drop-down menu and select MUSYM.

Label field


Select the 'Middle Center' position for the label.

Label position


Then click on the options 'Duplicates' and 'Visible'

Apply to all classes



Finally, click on the 'Apply to all classes' link.

Option



To finish, click on Accept. The labels for Map Unit Symbols (MUSYM value) will be overlaid on top of their corresponding polygons.

Soils Map with labels - Click here to see a larger view

Related Articles

Exercise 03 – Edit Data

Suppose that you wish to create a crops layer and a soil sampling grid for the next crop year.

Copying Layer Objects

You will duplicate the Fields layer using the Prescription structure.

First, you need to create the Crops layer. Go to Add New Layer Add New Layer.

Select the Vector Layer (Objects) option. Press Next.

Add new vector layer


Fill in the information in the dialog box as follows: Layer Name: Crops; Group: Farm Layout. Structure: Prescription. Click on Finish.

Create Vector Layer

A new layer has been created under the Farm Layout group in the Reference Panel. There are currently no objects associated with this layer.

Now activate the 'Fields (Producer)' layer and select all objects. Go to the Edit Layer Objects option Edit Layer Objects.

Click on the Copy Objects button.

Copy Layer Objects


A dialog box will open where you will select the target layer. For this exercise, select the Crops layer. 

Layer Name

Then click on Copy and finally click on Accept.

Editing Layer Objects

You will now divide a field into two polygons. Each polygon will represent a different type of crop.

Turn on the Orthophoto layer (if it's off). Activate the 'Crops' layer and select the polygon that's in it.

Select polygon - Click here to see a larger view

In order to divide the field in two, go back to the Edit Layer Objects tool set Edit objects and click on the Divide Selected Object Divide Selected Object button, under the Tools section.

Divide Object


Click from outside to outside of the selected field on the two points that will define the division line for the field.

Double-click on the second point in order to complete the operation.
Divide Object - Click here to see a larger view


As you can see, the field has been divided into two parts in the Crops layer that you have created.
Divide Object, resulting map - Click here to see a larger view

Related Articles

Modifying Data Associated with a Layer

Select the 2 objects created on the Crops layer. Go to the Edition Panel and click on the Edit Selected Object's Data tool Edit selected object's data.
The attribute table will open. Edit the attributes as follows.

Edit Selected Objects Data

Year: 2009

Task: Planting

Input: Wheat for the first record and Soybean for the second


Finally click on 'Save'

Then go to the Edition Panel in the Crops layer and click on Edit Cartography and Layer Properties Edit cartography. Assign colors and labels following the guidelines in Exercise 02 of this tutorial.

Using the two designated color fills for each class (crop)

Wheat in yellow

Edit Symbology - Wheat in yellow

Soybean in green

Edit Symbology - Soybean in green


This will be the result of the operation:

Edit Symbology, Resulting map - Click here to see a larger view

Related Article

Creating a Soil sampling layer

Using Add a new layer Image:GIS_gis_Edit_01_01.jpg create a layer called "Grid sampling"

Image:GGS_GIS_gis_Edit_03_32.png

Select the "Fields NRCS" layer to make it active

On the Edit Layer Objects Image:GIS_gis_Edit_05_01.jpg tool set click on the Grid points tool

Select appropiate values for horizontal and vertical spacing between samples.

Image:GGS_GIS_gis_Edit_03_33.png

Choose as the destination layer the newly created layer "Grid sampling"

Image:GGS_GIS_gis_Edit_03_34.png

Related article

Exercise 04- Adding Existing Information

In this Exercise you will learn how to import existing information to your GIS project. The software supports text files separated by tabs and files in shapefile format.
For this exercise you will picture a scenario in which a collaborator has sent you a Common Land Units layer in shapefile format. In order to do this exercise you first need to download the following sample file: http://www.geoagro.com/downloads/sampledata/iowa/hardin/clu_public_a_ia083.zip After downloading the file, unzip it and remember its location.

Note Note: This file format is commonly used to exchange information between GIS Systems. For more information on this as well as other file formats please see the following articles:

Import

Go to the the Import Data toolset Import data and choose the Import Layer tool.
Import layer

The Import Layer window will open. Click on Browse in order to select the file you have downloaded and unzipped (clu_public_a_ia083.shp) Import Layer - Click here to see a larger view

When you select it, you will see that the system cannot find a structure that is fully compatible with this file. This is what will normally occur when you try to import files from other platforms.
Choose 'Farm Layout' as the group and the 'Fields' structure.

Note Note: If you will use the same kind of files, You can alternatively import the entire structure by using the Import structure command, next to the structure drop down menu
Related Articles

Structure

Next you will match the fields in the existing file with those of the structure that you have selected.

By doing this you will correctly transfer the information from the original file to the new layer that you are creating.

Import Layer - Click here to see a larger view

Once this is done, click on Accept in order to begin the operation.

Note Note: For more information on the system’s existing structures and their uses, please see the article Structures management

Import Layer - Click here to see a larger view

Once the import is completed, the layer will be listed in the Reference Panel and will be displayed on the map with default symbology. Double click on it to zoom to it's extents
Import Layer, resulting map - Click here to see a larger view

Related Articles

Symbology

Now you will use the Layer Properties tool in order to assign more suitable symbology to the layer.

Go to the Symbology tab in the Layer Properties tool and select the Border tab.

Choose Green as the color for the border of the polygons and a Size of 3 for the thikness of it.

Border color and thickness

Now go to the Label tab and fill it as shown below. Choose 'ACRES' for the attribute, 'Middle center' for the position and 'Light green' for the background color. Labels

Finally click on 'Accept' to see the changes on the map.

Resulting CLU map - Click here to see a larger view

Related Articles

Exercise 05 - Exporting Information

In this exercise you will learn how to export individual layers. This will allow you to transfer information or exchange it with collaborators, suppliers, or colleagues.

Exporting Layer(s) to be Used in GeoAgro GIS

Using the Backup Layer tool.

Click on the Backup Layer tool Backup Layer tool. The Backup Layer window will popup.

Backup layer tool

Check the boxes next to the items that you wish to include in the file to be exported. For example, check the boxes for the 'Crops' and 'Fields_Spreadable acreage' layers of the sample project that you are working on.

Note Note: If you wish to export all the layers in the current project, check the top box in the column. By doing this all layers listed will be selected

Next, click on 'Save'. Before you save the file, the system will suggest that you save all changes made to this point. This will guarantee that your most updated data is saved. Confirmation Confirmation
Select the folder in your computer where you wish to save the export file.

Choose the name carefully

Note Note: It is recommended that you use the file creation date as part of its name, as well as any other fact that helps you recognize the contents of the file in the future

When the operation is finished, the system will display the following message in order to indicate that the operation has been successfully completed.

Message
You can later send the file containing the selected layers as you find most suitable.

Note Note: This example would apply to a farming consultant or farm manager who wished to export only data layers that needed to be supplied to the contractor responsible for the planting.
Related Articles

Exporting Layer(s) in Shapefile Format

If the person with whom you wish to share your layer(s) needs only the shapefile, for example, in order to import it to the applicator machine or other GIS, you will use a different tool in order to import the layer(s). Click on the Data Export tool set Tools for exporting data and then choose the Export Layer tool

Export layers

The following window will open:

Export layers window

In this window you will be able to select the layers that you wish to export as well as the fields that they will contain.

For the purposes of this exercise you will select the same layers that you have used in the previous exercise and will only export the fields that are relevant to the applications.

Note Note: The option of exporting only the selected fields is particularly useful if you do not wish other people to access sensitive information.

Click on Ok. The system will next ask you to browse for the folder were you wish to put the exported files.

Export layers location

Once this is done the operation will begin.

Export layers progress bar


After the task is completed the following message will be displayed:

Message

This means that the operation has been successfully completed.

Related Articles

Exercise 06 - Exporting and importing a Project

In this exercise you will learn how to backup an entire project. This will allow you to share information as well as secure valuable data.

Export

You will use the Backup tool Backup tool. Click on Create Backup.

Backup tool - Create backup

A dialog box will open asking you whether you wish to save changes.

Confirmation

Click on 'Yes'. By doing this you will make sure that your latest changes will be saved in the backup copy that you are about to create. A new window will open where you will type in the name of the backup file.

This file will have a special .gis file extension.

Backup location

Note Note: It is recommended that you use the backup file creation date as part of its name, as well as any other fact that will help you recognize the contents of the file in the future

Click on Save in order to complete the operation. Next, a dialog box displaying the progress of the operation will open.

Backup tool, progress bar

The following message will notify you that the operation is finished.

Confirmation

Related Articles

Import

You will now suppose that you have been sent a GeoAgro GIS backup file. The file contains an entire project. To import it, you need to follow these steps: You will create a project or sub-project. If you do not know how to do this, please follow the instructions in the tutorial on how to create projects Create Project. You will name your project ‘Import Tutorial'.

Note Note: When restoring or importing an entire project, all the layers in the current project will be replaced. For this reason, you need to create an empty project first

New project
Once you have created the ‘Import Tutorial’ project, select it to access the system. Click on the Backup tool Backup. Select the Restore Backup option.

The system will warn you that you will lose all data for your current project.

Warn

Click on OK. A new window will open. Browse for the file that you created in the previous step.

Import project

Click on Open. The operation will start immediately. The progress of the operation will be displayed as follows:

Importing project


Once the operation is successfully completed, the map will be identical to the one that you previously exported.

Importing project, resulting map - Click here to see a larger view

Related Articles