Disadvantages of using a geographic information system, or GIS, are that its technical nature might portray results as being more reliable than they actually are, and errors and assumptions can be hidden, leading to a lack of questioning into the results. Another disadvantage of analyzing the results from a GIS is that the results will only be as accurate as the data that they come from. Because of this, the data may not be able to serve different contexts, particularly if the data is not applicable.Know More
For instance, if the input data on a GIS is entered at the county level, the results in the GIS will only be usable for the county level, not any other level, such as the district or ward levels. Data availability, in itself, is also a major issue. If the data is not available, than the GIS system is useless.
Furthermore, GIS systems are not like other programs. They do not come"off the shelf," which means that they must be assembled and constructed to a user design. This could be a long, complex and costly process. Because of this, many GIS systems don't come to fruition or fail outright in their implementation because their creation was rushed or inadequately planned.
GIS systems are often so complex, in fact, that it becomes difficult to describe the intangible benefits they may provide, making it difficult to find funding for their creation. Also, the technology behind GIS technology expands rapidly, causing GIS systems to have a high rate of obsolescence. It's also very difficult to make GIS programs that are both fast and user friendly. GIS systems typically require complex command language. Data fields and their accessibility are also not very understood, and data can become incomplete, obsolete or erroneous, rendering the GIS misleading.Learn more about Maps & Cartography
Spending long hours on computer games can bring out several health risks, including eyestrains due to too much focus on the computer screen, hand or wrist problems resulting from the overuse of the keyboard and mouse, and obesity due to lack of exercise. Other disadvantages include neck and back pain. Other problems result when an individual has an unhealthy addiction that leads to neglect of other areas of their life.Full Answer >
There are several drawbacks to using student portfolios to evaluate a student body's learning when trying to gather accurate information at a college; these include a lack of a standard for a portfolio, an inherent bias based on individual assessments and a lack of access to the larger portion of the student population of a campus. Portfolios are usually a collection of a student's work online, including papers, writing and exercises that were assigned as coursework.Full Answer >
There are several disadvantages of using Microsoft Excel, some of which include limited reporting, a lack of an audit trail and version control. In light of some of these disadvantages, a user may want to use actual database software or cloud storage software, such as Google Drive, which has the capability of housing spreadsheets indefinitely.Full Answer >
Section maps mainly display the two-dimensional representation of a three-dimensional landscape using contour lines. A section map indicates any elevations in the landscape and the steepness of the gradient. Measuring horizontal distances in addition to vertical elevations is also possible using a section map.Full Answer >