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interimage:examples:example5 [2011/08/22 15:34] rsilva |
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| * tijuca.tif | * tijuca.tif | ||
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| * When the interpretation pauses, click the //Analysis Explorer// button. | * When the interpretation pauses, click the //Analysis Explorer// button. | ||
| {{interimage:examples:example5_19.png|Open Analysis Explorer}} | {{interimage:examples:example5_19.png|Open Analysis Explorer}} | ||
| - | * In the window that shows up add three //Expression// blocks according to the figure below. Then click //Run//. | + | * In the window that appears add three //Expression// blocks according to the figure below. Then click //Run//. |
| {{interimage:examples:example5_23.png|Decision Rule}} -> {{interimage:examples:example5_24.png|Click Run}} | {{interimage:examples:example5_23.png|Decision Rule}} -> {{interimage:examples:example5_24.png|Click Run}} | ||
| * Click the //Attribute View// button. Then select one of the new attributes and click //Apply//. Repeat the operation with the other attributes. | * Click the //Attribute View// button. Then select one of the new attributes and click //Apply//. Repeat the operation with the other attributes. | ||
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| * Click the //Analysis Tools// button and click //Apply//. | * Click the //Analysis Tools// button and click //Apply//. | ||
| {{interimage:examples:example5_28.png|Analysis Tools}} | {{interimage:examples:example5_28.png|Analysis Tools}} | ||
| - | * In the window that shows up click the //Histogram// button. Select one of the new attributes and click //Generate//. | + | * In the window that appears click the //Histogram// button. Select one of the new attributes and click //Generate//. |
| {{interimage:examples:example5_29_2.png|Analysis Tools - Histogram}} | {{interimage:examples:example5_29_2.png|Analysis Tools - Histogram}} | ||
| * Check the //Selection Threshold// checkbox. A red dot will appear over the histogram graph. This dot represents the "cut" value, polygons with attribute values above this threshold will be selected and the others rejected. Drag the red dot to change the threshold value and then click //Preview//. Repeat the operation with the other attributes. | * Check the //Selection Threshold// checkbox. A red dot will appear over the histogram graph. This dot represents the "cut" value, polygons with attribute values above this threshold will be selected and the others rejected. Drag the red dot to change the threshold value and then click //Preview//. Repeat the operation with the other attributes. | ||
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| * Now, click the //Scatter Plot// button. Select two of the new attributes and click //Generate//. | * Now, click the //Scatter Plot// button. Select two of the new attributes and click //Generate//. | ||
| {{interimage:examples:example5_31.png|Analysis Tools - Scatter Plot}} | {{interimage:examples:example5_31.png|Analysis Tools - Scatter Plot}} | ||
| - | * Check the //Selection Line// checkbox. A red line will appear over the scatter plot. This lines represents the "cut" line, polygons with attribute values to the right of the line will be selected and the others rejected. Drag the dots of the line to change the selection. Repeat the operation with the other attributes. | + | * Check the //Selection Line// checkbox. A red line will appear over the scatter plot. This lines represents the "cut" line, polygons with attribute values to the right of the line will be selected and the others rejected. Drag the line dots to change the selection. Repeat the operation with the other attributes. |
| {{interimage:examples:example5_32.png|Selection Line}} | {{interimage:examples:example5_32.png|Selection Line}} | ||
| * The idea here is, after adjusting the thresholds, to copy the criterion expression and insert it into the Decision Rule as a //Selection// block. | * The idea here is, after adjusting the thresholds, to copy the criterion expression and insert it into the Decision Rule as a //Selection// block. | ||
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| {{interimage:examples:example5_35.png|Selection result}} | {{interimage:examples:example5_35.png|Selection result}} | ||
| * If you are satisfied with the result, click OK. Otherwise, you can try to improve the classification result adjusting the thresholds. | * If you are satisfied with the result, click OK. Otherwise, you can try to improve the classification result adjusting the thresholds. | ||
| - | * Click OK. The system will execute your final decision rule and pause. Enable the //Grass// node and click and click the //Debug Mode// button. | + | * Click OK. The system will execute your final decision rule and pause. Click //Continue// for the interpretation to continue until the end. |
| + | {{interimage:examples:example5_37.png|Continuing the interpretation}} | ||
| + | * Enable the //Grass// node and click the //Debug Mode// button, deselecting it. | ||
| {{interimage:examples:example5_36.png|Exiting the Debug Mode}} | {{interimage:examples:example5_36.png|Exiting the Debug Mode}} | ||
| + | * Save the project and run the interpretation. | ||
