ENVI Tutorial. I. Main Menu Bar. A. File–>Open Image File. 1. Navigate to the file. If there is no header for the file, ENVI will bring up the “Header Info” dialog box. of important operating and maintenance (servicing) instructions in the literature accompany- Since the DM is designed with a working envi- ronment in mind, full control-room POD 4 encoder. Figure Monitor parameters screen. Data Access: The step-by-step procedures below are for ENVI version (Click here to access step-by-step instructions for Envi 5. Click here.

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Data preparation Step 1: Do you know a valid link to download viper? In other regions the months have to be selected according to the local phenology. All processing level from the first stage to the end is performed for June month too.

Tom Dilts 2 8. The following figure shows the range land of the sample area. Thank you for your interest in this question.

Step by Step: Drought monitoring using the Vegetation Condition Index (VCI) in ENVI (version 4.8)

For more details on the band math operation cf. To decrease the data size and to increase the speed of processing, it is recommended to resize the MVC-crop data. Tried the installation method given in the user manual and also the method suggested above.


In order to illustrate the drought condition in study area, a line fits to the mean NDVI in period Are those tools supported at that version of ENVI? From available vector list window you can simply load this vector file. Layer Stacking Step 3a: I have no idea whether it actually runs correctly.

However, the standard values for NDVI are within a range from -1 to 1. Then select desired NDVI file.

Printer-friendly version Log in to post comments. Are you trying to use the tool in ENVI 5.

Skip to main content. In general, the departure from the long-term mean NDVI is effectively more than just espaaol drought indicator, as it would reflect the conditions of healthy vegetation in envvi and wet years. The band math screenshots below were done in Envi 5. Click here to access step-by-step instructions for the free software R Studio. A month-by-month May and June spatial distribution of VCI in the study area during the period is processed.


Then choose the input data file. The greater the negative departure, the greater the magnitude of a drought. It is recommended to reduce the amount of data to decrease the time for computing.

installation – Installing Viper tools for ENVI? – Geographic Information Systems Stack Exchange

Change Map Projection The current projection of data file is sinusoidal. Please edit your question to provide this information. In the resize data parameters window, set samples and lines according to region of interest. It needs to be converted to Geographic or LatLong projection.

In this case it is for May, from Please clarify your specific problem or add additional details to highlight exactly what you rspaol. The data range varies from 0 to 1 0 showing areas without vegetation and 1 showing areas with dense and healthy vegetation.

So the output includes 14 bands or 14 VCI from to