Review for "Visualizing COVID ‐19 information for public: Designs, effectiveness, and preference of thematic maps"

Maps or remote sensing can be interpreted as the process of reading using various sensors where data collected remotely can be analyzed to obtain information about the object, area or phenomenon. In this study, the author develops a flood disaster mapping information system applying overlays with scoring between the parameters. The determinant factors to provide flood hazard levels includes rainfall factors in the dasarian unit, land-use factors and land-use arbitrary factors. Of all these parameters, a scoring process will be carried out by assigning weights and values according to their respective classifications, then an overlay process will be performed using ArcGIS software. The author conducted this study in Nagan Raya Regency since this area experiences flooding annually. Framing a thematic map of flood-prone areas in Nagan Raya Regency was designed using the flood hazard method. Spatial data that has been presented in the form of thematic maps as parameters are land use maps, landform maps, and dasarian rainfall maps (per 10 daily). The design of thematic maps that are prone to flooding is done by overlapping (overlay process). In contrast, the determination of the classification is done by adding scores to each parameter, with low, medium and high hazard levels. Parameter analysis shows the level of flood vulnerability in Nagan Raya Regency of each district, namely Beutong: high 0.21%, medium 13.68%, low 86.12%. Seunagan District: high 51.17%, medium 48.83%, low 0%. Seunagan Timur District: high 10.07%, medium 46.18%, low 43.75%. Kuala Subdistrict: high 29.66%, medium 68.99%, low 1.35%. Darul Makmur District: high 8.57%, medium 63.37%, low 28.06%. From the overall results of the study, it can be concluded that the danger of flooding in Nagan Raya Regency with a level of vulnerability: high 9.92%, moderate 42.65% and low 47.43%.

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CREATING A DATABASE WHEN CREATING THEMATIC MAPS

JOURNAL OF AGRO PROCESSING ◽

10.26739/2181-9904-2020-sl-2 ◽

2020 ◽

Vol Special issue (1) ◽

pp. 12-16

Author(s):

Gulnoza Mullodjanova ◽

◽

Muhriddin Qalanadarov ◽

Dinora Hamdamova ◽

Akmal Isakulov

Keyword(s):

Thematic Maps

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Thematic Maps for the Variation of Bearing Capacity of Soil Using SPTs and MATLAB

Geosciences ◽

10.3390/geosciences10090329 ◽

2020 ◽

Vol 10 (9) ◽

pp. 329

Author(s):

Mahdi O. Karkush ◽

Mahmood D. Ahmed ◽

Ammar Abdul-Hassan Sheikha ◽

Ayad Al-Rumaithi

Keyword(s):

Bearing Capacity ◽

Mean Squared Error ◽

Ground Level ◽

The Other ◽

Thematic Maps ◽

First Order ◽

Squared Error ◽

Order Polynomial ◽

Interpolation Polynomials ◽

Penetration Tests

The current study involves placing 135 boreholes drilled to a depth of 10 m below the existing ground level. Three standard penetration tests (SPT) are performed at depths of 1.5, 6, and 9.5 m for each borehole. To produce thematic maps with coordinates and depths for the bearing capacity variation of the soil, a numerical analysis was conducted using MATLAB software. Despite several-order interpolation polynomials being used to estimate the bearing capacity of soil, the first-order polynomial was the best among the other trials due to its simplicity and fast calculations. Additionally, the root mean squared error (RMSE) was almost the same for the all of the tried models. The results of the study can be summarized by the production of thematic maps showing the variation of the bearing capacity of the soil over the whole area of Al-Basrah city correlated with several depths. The bearing capacity of soil obtained from the suggested first-order polynomial matches well with those calculated from the results of SPTs with a deviation of ±30% at a 95% confidence interval.

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Three-Dimensional Thematic Map Imaging of the Yacht Port on the Example of the Polish National Sailing Centre Marina in Gdańsk

Applied Sciences ◽

10.3390/app11157016 ◽

2021 ◽

Vol 11 (15) ◽

pp. 7016

Author(s):

Pawel S. Dabrowski ◽

Cezary Specht ◽

Mariusz Specht ◽

Artur Makar

Keyword(s):

Spatial Data ◽

Convex Surface ◽

Dimensional Space ◽

Three Dimensional ◽

Future Research ◽

Two Dimensional ◽

Thematic Maps ◽

Research Directions ◽

Future Research Directions ◽

The Many

The theory of cartographic projections is a tool which can present the convex surface of the Earth on the plane. Of the many types of maps, thematic maps perform an important function due to the wide possibilities of adapting their content to current needs. The limitation of classic maps is their two-dimensional nature. In the era of rapidly growing methods of mass acquisition of spatial data, the use of flat images is often not enough to reveal the level of complexity of certain objects. In this case, it is necessary to use visualization in three-dimensional space. The motivation to conduct the study was the use of cartographic projections methods, spatial transformations, and the possibilities offered by thematic maps to create thematic three-dimensional map imaging (T3DMI). The authors presented a practical verification of the adopted methodology to create a T3DMI visualization of the marina of the National Sailing Centre of the Gdańsk University of Physical Education and Sport (Poland). The profiled characteristics of the object were used to emphasize the key elements of its function. The results confirmed the increase in the interpretative capabilities of the T3DMI method, relative to classic two-dimensional maps. Additionally, the study suggested future research directions of the presented solution.

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