DataCanvas.anisa

DataCanvas.anisa Showcasing GIS maps(ArcGIS/QGIS) and data visualizations in R. Academic, research & freelance project

17/04/2026

📢 If anyone needs help with mapping or data visualization, feel free to contact me
​📊 Part 2: Dhaka Temperature and Rainfall Time Series (2010–2020)
Heatwave Detection in R
≥3 consecutive days >30°C defined as a heatwave. Using if_else() and cumulative sums, a total of 2,617 heatwave days were identified.
Cross-Correlation: Temperature vs Rainfall
Analysis shows weak but lagged relationships between temperature and rainfall across ±30-day periods, indicating delayed climatic interactions.
2015 Temperature Anomalies
Clear warming signals observed throughout the year, with peaks in mid-year—highlighting early indicators of pre-2016 warming trends.
Rainfall vs Temperature Relationship
Majority of rainfall occurs at lower temperatures (

📢 If anyone needs help with mapping or data visualization, feel free to contact me​📊 Part 2: Dhaka Temperature and Rainf...
13/04/2026

📢 If anyone needs help with mapping or data visualization, feel free to contact me
​📊 Part 2: Dhaka Temperature and Rainfall Time Series (2010–2020)
Heatwave Detection in R
≥3 consecutive days >30°C defined as a heatwave. Using if_else() and cumulative sums, a total of 2,617 heatwave days were identified.
Cross-Correlation: Temperature vs Rainfall
Analysis shows weak but lagged relationships between temperature and rainfall across ±30-day periods, indicating delayed climatic interactions.
2015 Temperature Anomalies
Clear warming signals observed throughout the year, with peaks in mid-year—highlighting early indicators of pre-2016 warming trends.
Rainfall vs Temperature Relationship
Majority of rainfall occurs at lower temperatures (

10/04/2026

📢 If anyone needs help with mapping or data visualization, feel free to contact me
📊 LULC Change Detection Analysis of Chattogram District (2000–2026)
This is a time series analysis of change detection of LULC classes in Chattogram district from 2000 to 2026.
Here, I created LULC maps for the years 2000 and 2026, then performed change detection between them. I kept the change legend based on my analytical requirements. 🗺️
After that, I calculated the area of the changed classes and represented those areas using bar charts 📊 and pie charts (with percentage).
This is just a sample work. I did not conduct ground truthing or cross-verification, so no conclusions can be drawn from this analysis.

📢 If anyone needs help with mapping or data visualization, feel free to contact me📊 LULC Change Detection Analysis of Ch...
08/04/2026

📢 If anyone needs help with mapping or data visualization, feel free to contact me
📊 LULC Change Detection Analysis of Chattogram District (2000–2026)
This is a time series analysis of change detection of LULC classes in Chattogram district from 2000 to 2026.
Here, I created LULC maps for the years 2000 and 2026, then performed change detection between them. I kept the change legend based on my analytical requirements. 🗺️
After that, I calculated the area of the changed classes and represented those areas using bar charts 📊 and pie charts (with percentage).
This is just a sample work. I did not conduct ground truthing or cross-verification, so no conclusions can be drawn from this analysis.

01/04/2026

📢 If anyone needs help with mapping or data visualization, feel free to contact me
📊 Time Series Analysis of Temperature and Rainfall in Dhaka (2010–2020) 🌆🌦️

This analysis is based on 10 years of temperature and rainfall data (2010–2020) for Dhaka, Bangladesh. Here, I tried to visualize time series patterns at different temporal scales.

In some plots, I interpreted time series variations of temperature and rainfall based on daily data. In others, I used monthly time series plots to better understand seasonal variability. Finally, in the last plot, I analyzed the annual trends.

The annual trend analysis indicates that both temperature and rainfall exhibit increasing tendencies over the study period. The Sen’s slope estimator reveals a gradual rise in temperature (0.045 °C/year) and a comparatively stronger increase in rainfall (63.44 mm/year). However, the Mann–Kendall test results (p > 0.05) suggest that these trends are statistically insignificant. Therefore, the observed changes may reflect short-term variability rather than a definitive long-term climatic trend.

📌 This highlights the importance of combining visualization with statistical testing in climate data analysis.


.anisa

📢 If anyone needs help with mapping or data visualization, feel free to contact me📊 Time Series Analysis of Temperature ...
01/04/2026

📢 If anyone needs help with mapping or data visualization, feel free to contact me
📊 Time Series Analysis of Temperature and Rainfall in Dhaka (2010–2020) 🌆🌦️

This analysis is based on 10 years of temperature and rainfall data (2010–2020) for Dhaka, Bangladesh. Here, I tried to visualize time series patterns at different temporal scales.

In some plots, I interpreted time series variations of temperature and rainfall based on daily data. In others, I used monthly time series plots to better understand seasonal variability. Finally, in the last plot, I analyzed the annual trends.

The annual trend analysis indicates that both temperature and rainfall exhibit increasing tendencies over the study period. The Sen’s slope estimator reveals a gradual rise in temperature (0.045 °C/year) and a comparatively stronger increase in rainfall (63.44 mm/year). However, the Mann–Kendall test results (p > 0.05) suggest that these trends are statistically insignificant. Therefore, the observed changes may reflect short-term variability rather than a definitive long-term climatic trend.

📌 This highlights the importance of combining visualization with statistical testing in climate data analysis.


.anisa

13/03/2026

Process of estimating Sea Surface Temperature (SST) of Bay of Bengal using SagaGIS.

Detailed processed video has been uploaded
12/03/2026

Detailed processed video has been uploaded

09/03/2026

📢 If anyone needs help with mapping or data visualization, feel free to contact me. I am currently working as a freelancer in GIS-based mapping and spatial data visualization.
🗺️ Land Use and Land Cover (LULC) Map – Chattogram District
Land Use and Land Cover (LULC) mapping is commonly used to visualize and analyze how land areas are distributed among different natural and human-made features such as 🌳 forests, 💧 water bodies, 🌾 agricultural land, and 🏘️ human settlements.
In this work, I created a LULC map of Chattogram District to represent the spatial distribution of different land cover classes. During the mapping process, I dissolved the island areas to simplify the spatial representation of the region.
⚠️ Note: Minor errors in area calculation may appear in the map because this analysis was conducted without ground truth validation. The main objective of this work was to represent and visualize the spatial distribution of land cover categories.
🗺️

📢 If anyone needs help with mapping or data visualization, feel free to contact me. I am currently working as a freelanc...
09/03/2026

📢 If anyone needs help with mapping or data visualization, feel free to contact me. I am currently working as a freelancer in GIS-based mapping and spatial data visualization.
🗺️ Land Use and Land Cover (LULC) Map – Chattogram District
Land Use and Land Cover (LULC) mapping is commonly used to visualize and analyze how land areas are distributed among different natural and human-made features such as 🌳 forests, 💧 water bodies, 🌾 agricultural land, and 🏘️ human settlements.
In this work, I created a LULC map of Chattogram District to represent the spatial distribution of different land cover classes. During the mapping process, I dissolved the island areas to simplify the spatial representation of the region.
⚠️ Note: Minor errors in area calculation may appear in the map because this analysis was conducted without ground truth validation. The main objective of this work was to represent and visualize the spatial distribution of land cover categories.
🗺️

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Nazirhat, Hathazari, Chattogram
Chittagong

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