displaying raster data with ArcGIS

You have acquired a Landsat 8 image covering a portion of Redlands, California. You want to display the image as a natural color. Which band order should you use to do this?

(4,3,2)

Which of the following band combinations would be ideal to visualize vegetation and crops?

(5,4,3)

Which of the following band combinations would be ideal for visualizing urban environments?

(7,6,4)

Which of these facts characterize on-the-fly processing?

-It considers processing as separate and linear steps -It uses functions to process -?It can be used to extract useful information, prepare data... etc NOT ALL THREE

You have obtained an image that looks quite dark. How would you lighten it?

Adjust the brightness

You have obtained a multispectral image from your client. You displayed the image as a (5,4,3) combination with DRA applied. What does the bright red signify?

Areas with healthy vegetation

Which display method allows you to group cell values into classes?

Classified

You have obtained a raster dataset in Tagged Image File Format (TIFF). This dataset has an internal color map stored. You want to display the raster dataset using this color map. Which renderer would you use in this case?

Color map

Which of the following functions is appropriate to use to detect edges in a raster data?

Convolution function

What is commonly studied using infrared sensing?

Crops and different habitats

When you render raster datasets in ArcGIS, a new output raster is created.

False

You have acquired a 30-meter multispectral image and a 15-meter panchromatic image. You would like to increase the resolution of the multispectral bands to near 15 meters to perform land cover change detection. Which of the following would you do to accomplish the task?

NOT Change the gamma value to 1.0 NOT Apply the bilinear interpolation technique on the 30-meter multispectral image

You are working on a project that requires you to distinguish higher elevation points from the lower spots in a national park to study how the elevation can affect humidity, as well as how hot it feels. Which display option could you use to help distinguish high and low elevations for only your study area?

NOT Contrast

You have obtained a single-band raster dataset that contains fewer than 25 unique values. Which renderer is appropriate to use in this case?

NOT RGB

You have obtained a slope map of a portion of Mount St. Helens to evaluate its topography. You want to group the areas in the map as follows: gentle, steep, nearly vertical cliff, and crater. Which renderer would be ideal to use in this case?

NOT Stretch NOT Discrete

You have a multiband image with a spatial resolution of 30 meters and a panchromatic image with a spatial resolution of 2 meters. You want to fuse these two images to obtain a multiband image with the resolution of the panchromatic image where the two images fully overlap. Which appearance function would be ideal to use to perform this task?

Pan-sharpening function

When is it appropriate to apply stretch to an image?

To emphasize certain features while suppressing others

You have multiple raster datasets with varying resolutions. When you resemble the data, some of the datasets will automatically be red ampler into the coarsest resolution of the input datasets.

True